social anxiety, please just go away..

why do I panic over nothing? soo, I was invited to this girls birthday party tomorrow. I haven’t seen or spoken to this girl since 3rd grade, and she has medical issues that don’t allow her to do typical things, and she’s in a wheel chair (from what I can remember). Now, typically, this isn’t a scary situation. but for me, I have the WORST social anxiety, so if there is anyway of me embarrassing myself, I have a panic attack just thinking of the possibility. now, I have noooo clue what to get her, what she likes or what she can and can’t use, and I know absolutely no one who is going. I can’t socialize with anyone, ever. that’s why I literally have only 4 friends. 1 of which lives in fucking Washington, so I never see her. anyways, I have no fucking clue what to do right now. fuckfuckfuck..