She falls silently.
She didn't try to avoid the tear, but that doesn't mean going through it solves all her problems; she still has lots of those. She can't scream, though - while she would if she could - it's not really her top priority. She can't arrest her fall because she's only allowed to fly in the course of making progress toward her destination and this isn't it, no direction is. She can't heal herself and it is likely she still wouldn't be able to even if somebody found her and did all the essential things, since this is presumably the mortal world, so she's sort of twitching, trying to arrange to land on something that isn't already injured, so she can heal naturally a bunch of things in parallel instead of one worse thing over much longer. She mostly succeeds. Breaks a leg when she hits the ground and still doesn't scream.