Hi and a warm
That sounds like a shocking experience to go through -- you genuinely thought everything was fine up until the night before being blocked. I'm sorry you've been going through that; it sounds like a gut punch.
Other members here have gone through similar situations, so you're not alone. While there are no guarantees about how things will turn out, I do see that you're posting here on the "Bettering a relationship" board, so am I tracking that you would like to reconnect with her?
She's sending a big message right now and (whether any of us think it's valid or not) likely feels deeply hurt. My first thought is to find a way, either on your own, here, and/or with a therapist/counselor, to work with your shock and heartbreak as you wait to see if/when she'll respond. Generally, people put up big walls like mass blocking, trying to get through those walls "confirms" to them how right they were to block. Maybe something felt out of control to her, and she wants to "be in the driver's seat" right now. It may be that the least bad option you have at present is to give her the space that she is demanding (albeit demanding in a low-skilled way) and allow her to set the pace for any reconnection.
Hard situation to be in, for sure.
What's your support system like right now? Friends? Family? Therapist?
Activities you like to do for yourself? Lean into that as much as you can. We're happy to be part of that for you, too.