What does "she" in "she needs" refer to?

Question

Quill had breakfast with his grand-pa, who was busy reading a "The St. Charles Post" article:

Quill: I mean, if she needs help mowing her lawn, I'll do it, but I kinda feel like her son should help. He's gonna sit on the porch and watch me do it. Like, he's a 45-year-old man, able-bodied, and I'm mowing his lawn. It just feels weird.

Grand-pa: Don't get me started.

Quill: Oh, really? Now I kind of want to know.

What does "she" in "she needs" refer to?

Answer 1

Peter's stepgrandmother, the wife of Jason Quill, who lives in the house with Jason. "He" was presumably Peter Quill's uncle (Meredith's brother).