The book starts off with a girl who has tattoos but doesn’t know how she got them. They showed up on her 16th birthday or something; she was in extreme pain and woke up with the tattoos.
At the start, she’s about to go into a boxing match against a really big guy and he keeps cat-calling her before the match and stuff, and she ends up winning. After the match is over, this guy keeps staring at her from the crowd and it freaks her out.
When she’s leaving the place she, realizes her ride isn’t there, so she starts walking across a field and walks through a magic barrier by accident, and finds out she walked into a fight which she later discovers was against werewolves and people that have magic.
She pulls out magic weapons from her tattoos and helps them win the fight, and after, they give her a ride her and she falls asleep. When she wakes up, she’s at their house instead, so they can find out how she got the tattoos and powers because they also have tattoos and powers, but theirs are different.
I read this about a year ago on Amazon Books, and I would really like help finding it, if anyone can. Thank you.