This seems like such a silly simple thing, I'm shocked that I can't find a solution.
I barely use Facebook at all, but recently someone sent me a friend request that I wanted to accept. Unfortunately I accidentally hit Delete Request instead. Now I cannot add them, they cannot add me. We can message each other, but cannot be "friends" on Facebook. I cannot find any way to send a second friend request, nor can I send her a friend request (seems like I should be able to, since I was the one who deleted her request originally… but no).
Is there any way for me to send her a friend request, or her to send me another? I can't find any way to "undo" my deletion either. This is really annoying… anyone have any ideas?