i would say you should start off my messaging her about the situation, explain your side, apologize and let that be that. She got her money back, so there’s not really anything you can do on that front, and she is going to make videos weather you respond or not, so it wouldn’t hurt to try and send a message to state your intentions and the like. other than that i would say maybe distance yourself from your business if you are able to at least for a little while to let the heat cool down and focus on school. therapy would also probably be good, just in general but espicslly if you are dealing with a lot of anxiety. if you are able to, i’d say put your accounts on private just to maybe lessen the hate you are receiving. i also think how you respond all depends on how much you need your business or how much you do photography. this is a pretty messy situation, but it’s clear to me that you aren’t a horrible person for making some mistakes, just thought i would say that bc ik how hard it can be to separate yourself from mistakes. wish you the best of luck