There’s a woman that lives next door to one of the libraries that I frequent (and used to occasionally park at). She says she used to be homeless.

She either never learned the homeless code or has forgotten it.

You don’t intrude on someone else’s camp unless invited. You don’t stand at the perimeter of their camp and yell one-sided conversations at them. If they are out and about and give any indication that they want/need to be alone then you let them alone; you don’t dog them with unwanted one-sided conversation.
You don’t ask them for favors (unless you’ve been out there with them for a decade), and when they decline you don’t keep repeating your request.

I know, or at least I think I know, that she means well. But she never stops for breath, literally. She sort of draws air in with her words, there are no pauses.
And despite the fact, after the third time in 30 minutes that she stood outside my camper and yelled entire conversations at me, that I opened my door and told her that I couldn’t deal with people right now and that I was fighting a migraine, she kept talking at me and promised that she’d come back and wake me up in the morning so I could give her a ride uptown.

I don’t want to give her a ride (the gas milage on my truck is abysmal and traffic triggers me much of the time). I don’t want to talk to her. I don’t want to listen to her talk. I don’t want to have to repeatedly tell her no. I don’t want to have to stop coming to this library just to avoid her.