pspspsps. hear me out. lisalottie au where lottie works on a monster hunting force, and lisa is the vampire she's tasked to track down. but lisa is a pesky little vampire, always getting away, so it takes a few attempts before lottie actually has lisa in her grasp.
by then, she's built a sort of connection to her (and an attraction). so when lottie finally has her pinned to the wall with a stake in her hand... she can't bring herself to do it. (maybe she also has some kind of connection to vampires like how she has to the wilderness... or perhaps just vampire heritage.
either way, maybe that physically and mentally compels her not to stake her. maybe she's hunted other monsters but this is her first vampire and she's never known she couldn’t do it) either way lottie lets her go "with a warning", something she's never done before. and tells her she has 3 strikes, hoping lisa will end up out of her hair by the third strike.
but then the third strike rolls around, and lottie has her pinned up against the wall again, but this time she's throwing caution to the wind, and lips pressed against the vampire's she's supposed to have killed by now.
or something like that idk.