Actually attempt to have her as a confidant

...You had been alone for a bit too long... You could steal stuff or give stuff you already had... You didn't have any "love" for myself though or "friendship". You looked at yourself in Velma's bathroom and looked in the mirror. You stole your "Grime", "Beard", and "Hair Length"... turns out you couldn't steal away holes... just things that actually existed no a lack of existence. So you just took away the "grime" from your clothes which were still pretty ratty.

...Now for your pitch... Velma was in one piece and in better shape than she had ever been. Aside from a bit more tone and a bit less fat she was more or less herself in her dress and uncomfortable shoes. Then you yanked out her ability to speak, ability to walk/run/move using her legs/feet as propulsion, and finally her ability to panic. You wanted her to be calm... and not run off and scream to the whole apartment complex about some super powered... you'd rather not finish that thought. You took out Velma from your inventory onto her couch in a seated position and waited for her to fully regain awareness before making a small cough where she saw you and did feel an amount of fear dampened from panic no longer being an aspect... only being more afraid that she couldn't say "The heck did you do to me you Mugger!"

"Umm... before you try bolting I also temporarily stole your movement of your legs... I just want to give my pitch." You said awkwardly "Well... I admit I was after your purse to steal some money in order to get a bite to eat and maybe get some supplies to live on the street... or something... I didn't anticipate on just... taking you." Velma merely sat there stunned and unsure what exactly was happening "So... in exchange for... shelter and maybe someone to talk to I'd like to put my services to use. For example I've stolen my grime, beard, and some hair length in order to look more professional... I could also say," You stole a few years from yourself "Provide a version of immortality and youth by stealing literal years away... and of course I can do a lot for money or anything really... Just shake my hand if your willing to talk details... If you just want me out of your life I'll just steal the memories about me and leave you here." You held out your hand and after a few seconds Velma took and shook your hand. You gave her back her speaking, walking, and ability to panic.

"testing" Velma said as she could speak and move her legs a bit and then said "So, I either take you in as a roommate or you just leave with anything you want and I wouldn't even know any better?"

"What? No, I was just going to leave. I was a LOT more **** from before I learned I had this ability an hour ago. If me being a guy is an issue I could always find some trans person to willingly swap with."

"Your not just going to steal my heart?" Velma asked part curious, part afraid, part teasing?

"...Your affection, and I think I'd have to take that from something. You put your affection on something, at least that's how I interpret it."

Velma was tapping her foot for sure not happy that you had intruded like this, but... it was an opportunity of the lifetime and you were giving a lost puppy vibe. "Ok we-" then her phone started ringing a custom ring tone. "excuse me a sec," she answered "Hey Jo- wait calm down could you re- ok wait..." she then gave you a look "Ok, come over I think I have an idea of what's going on and how to help." then she hung up on her friend Joan and said "Well, looks like you were a little busy. Hope you can make everyone happy."