with all the careful sidestepping around the fact you were f**king her daughter, i'm suprised you allowed yourself to incinuate that her mum wants a bit of your pink oboe... but yes, if you want to make things work with this girl then you probably need to chat to the mum about what happened, and hopefully earn the respect that you're not just there for the sex. that will take a LONG time, but it'll be worth it right?