We're missing a lot of facts that would help drive the analysis. The first question I'd ask was whether this was part of an actual or attempted sex offense. If that's the case, the suspect could be facing particularly serious charges.
Other information is also missing, such as the drug involved, whether it's on the list of controlled substances, her knowledge of the drug, her relationship to the suspect, and so on.
Still, based on the information we've got and the inferences we can make from them, I could reasonably see the following charges being filed:
Sec. 12-3. Battery.
(a) A person commits battery if he or she knowingly without legal justification by any means (1) causes bodily harm to an individual
Sec. 12-3.05. Aggravated battery.
(g) Offense based on certain conduct. A person commits aggravated battery when, other than by discharge of a firearm, he or she does any of the following:
(1) Violates Section 401 of the Illinois Controlled Substances Act by unlawfully delivering a controlled substance to another and any user experiences great bodily harm or permanent disability as a result of the injection, inhalation, or ingestion of any amount of the controlled substance.
(2) Knowingly administers to an individual or causes him or her to take, without his or her consent or by threat or deception, and for other than medical purposes, any intoxicating, poisonous, stupefying, narcotic, anesthetic, or controlled substance, or gives to another person any food containing any substance or object intended to cause physical injury if eaten.
Sec. 12-4.5. Tampering with food, drugs or cosmetics.
(a) A person who knowingly puts any substance capable of causing death or great bodily harm to a human being into any food, drug or cosmetic offered for sale or consumption commits tampering with food, drugs or cosmetics.
Sec. 12-5. Reckless conduct.
(a) A person commits reckless conduct when he or she, by any means lawful or unlawful, recklessly performs an act or acts that:
(1) cause bodily harm to or endanger the safety of another person; or
(2) cause great bodily harm or permanent disability or disfigurement to another person.
Sec. 21-1. Criminal damage to property.
(a) A person commits criminal damage to property when he or she:
(1) knowingly damages any property of another
Sec. 11-1.20. Criminal sexual assault.
(a) A person commits criminal sexual assault if that person commits an act of sexual penetration and:
(2) knows that the victim is unable to understand the nature of the act or is unable to give knowing consent;
Sec. 11-1.30. Aggravated Criminal Sexual Assault.
(a) A person commits aggravated criminal sexual assault if that person commits criminal sexual assault and any of the following aggravating circumstances exist during the commission of the offense or, for purposes of paragraph (7), occur as part of the same course of conduct as the commission of the offense:
(2) the person causes bodily harm to the victim, except as provided in paragraph (10);
(3) the person acts in a manner that threatens or endangers the life of the victim or any other person;
(4) the person commits the criminal sexual assault during the course of committing or attempting to commit any other felony;
(7) the person delivers (by injection, inhalation, ingestion, transfer of possession, or any other means) any controlled substance to the victim without the victim's consent or by threat or deception for other than medical purposes;
Sec. 11-1.50. Criminal sexual abuse.
(a) A person commits criminal sexual abuse if that person:
(2) commits an act of sexual conduct and knows that the victim is unable to understand the nature of the act or is unable to give knowing consent.
Sec. 11-1.60. Aggravated criminal sexual abuse.
(a) A person commits aggravated criminal sexual abuse if that person commits criminal sexual abuse and any of the following aggravating circumstances exist (i) during the commission of the offense or (ii) for purposes of paragraph (7), as part of the same course of conduct as the commission of the offense:
(2) the person causes bodily harm to the victim;
(5) the person acts in a manner that threatens or endangers the life of the victim or any other person;
(6) the person commits the criminal sexual abuse during the course of committing or attempting to commit any other felony; or
(7) the person delivers (by injection, inhalation, ingestion, transfer of possession, or any other means) any controlled substance to the victim for other than medical purposes without the victim's consent or by threat or deception.
Sec. 9-1. First degree Murder
(a) A person who kills an individual without lawful justification commits first degree murder if, in performing the acts which cause the death:
(2) he knows that such acts create a strong probability of death or great bodily harm to that individual or another; or
(3) he is attempting or committing a forcible felony other than second degree murder.
Sec. 9-3. Involuntary Manslaughter and Reckless Homicide.
(a) A person who unintentionally kills an individual without lawful justification commits involuntary manslaughter if his acts whether lawful or unlawful which cause the death are such as are likely to cause death or great bodily harm to some individual, and he performs them recklessly
Sec. 9-3.3. Drug-induced homicide.
(a) A person commits drug-induced homicide when he or she violates Section 401 of the Illinois Controlled Substances Act or Section 55 of the Methamphetamine Control and Community Protection Act by unlawfully delivering a controlled substance to another, and any person's death is caused by the injection, inhalation, absorption, or ingestion of any amount of that controlled substance.
Sec. 9-3.4. Concealment of homicidal death.
(a) A person commits the offense of concealment of homicidal death when he or she knowingly conceals the death of any other person with knowledge that such other person has died by homicidal means.
Sec. 9-3.5. Concealment of death.
(b) A person commits the offense of concealment of death when he or she knowingly conceals the death of any other person who died by other than homicidal means.