Idk avoid instances that invoke cringe reactions? Install an uncringe patch? Hide from humanity? Well, you could just own it, have a laugh and move on, since ev1 will forget about it soon anyways.
The best way would be to talk about it openly. From the limited info you gave, if you're certain that she is the culprit and she really can't resist stealing, it could be a compulsive disorder, a mild case of kleptomania, which could be small atm, but can escalate into a serious disorder. Not saying she definitely has it, but still a thing to take ......
Ask an extrovert to adopt you. If that fails then start by greeting ppl, and slowly work your way up to small talk, then common topics and decent convos. Can be hard to step out of your comfort zone, but take your time and you'll get there! Good luck :)
'When people come to you for help, what do they usually want help with?' Hmm, the most common is asking for life/relationship advice, someone to listen to them, or when they need help with something they know I'm knowledgeable about. Or when they're hungry and want me to cook lol
I'm doing okay ig, with sincere hope it gets better for everyone asap. Also thanks for asking, very kind of you! How about you?
The usual, prank and scare the crap out of ppl, go to places I'm too broke to go to, probs rob a bank or something...
I was 14yo when I first tried alc. Tbh wasn't to my taste. Btw don't just casually reveal your age...
Idk keep to the basics or talk about stuff that you find interesting like aliens, or the 16 numbers on their credit card, the 3 numbers on the back and the expiration date...
Idk, call the police? Ignore it? Prepare for the robot apocalypse? Bond with the doppelganger over our mutual hate for me? Research wtf is going on? Drink a coffee since I just woke up after a 100 years long nap?