she's a stand in for death, you've passed the level when she appears, i also made it so she teleports to you if you ever actually kill her
i dont know why the items arent being removed from the pool as they should be and often are in testing
all items should always have their effects since they do the same thing at every level, but the weapons are supposed to cap out at 8 and accessories at 5 (except the mirror, which is OP)