I have an AU Erica at a panfandom game where Peter was the one to bite her (instead of attacking Lydia but timeline is negotiable), if you're interested (either in the game or psl-ing it). And of course she's always up for attempting to seduce Derek <3
Also, you said you don't ship Derek/Kate, which is cool, but I've been dying to play her post s1 as a were after Peter attacks ("kills") her, which doesn't have to be shippy. Would most likely be very very angsty. Either Hale would be fun for that one.