[@ayzrules]
Awesome! I'm not sure how in-depth and detailed you'd like to get before the RP starts, but here's a few more of my thoughts to go with what I originally wrote:

Phoebe would probably soon start to see Wendy as almost a mother-figure after meeting her, having lost her own before she was even a teen. She'd likely latch on to Wendy and become very trusting of her very quickly, due both to Wendy's kind nature and Phoebe's, I guess, subconscious need for a mother-figure. The first person she'd go to for advice on most things would nearly always be Wendy. I could also see Phoebe going to her and asking her to just like, teach her stuff or something, since Wendy went waaay further in her schooling than Phoebe did. And of course, being the person Phoebe would likely trust the most and be the most comfortable around, she'd spend time with Wendy just to spend time with her.

I'll stop here before I start rambling too much. Let me know your thoughts and any ideas you might have when you get the chance.