Wow, that is pretty fucked up. Is L still a lesbo, or did she "change" so she can get along with her mom? As a parent, you need to be there for your children to help them through thick and thin. Obviously, your aunt is screwed up and doesnt want to deal with it. I guess, from at least what it sounded like to me, you are more of the mother figure then anything, and thats why they come to you. Hopefully, it all works out for you.