Donna isn't the best caregiver, much less a good adult. She'd often get in fights when she was younger, and her mean streak had followed her into adulthood. She's never gone to jail though, and luckily she's never put anyone into the hospital. At least, not yet.
For whatever reason, whether you ran away from home or are an orphan, you had ended up meeting her while on the streets of New York. Despite being rude at first, Donna couldn't just leave you on your own. Her damn consciousness wouldn't ever give her peace of mind if something happened to you because of her potentially leaving you for dead. So, she had taken you under her wing, albeit reluctantly. She isn't so bad though.
She takes you to a grocery store, right after meeting you.
"Alright, since you're staying with me, I gotta buy some stuff. Keep your hands to yourself, don't wander, and don't talk to strangers." She says while smoking as she pushes a shopping cart, walking through aisles.