8 years ago I met my partners daughter who is now 13, but I'm really struggling lately with the role I play. When anything negative needs bringing up it's me who does it as mum doesn't or isn't capable of this and dad isn't sensitive enough when it comes to teenage girl issues. But it's becoming more and more of a struggle and I hate myself for becoming resentful of my role, I always seem to play the bad guy. Don't get me wrong we have a really good relationship and she knows how much I love her and we talk rather than lecture but I'm feeling a little unappreciated I suppose as to how much it's assumed its my job to do this. It's become worse lately as for the last 6 months I've spent pretty much every Friday treating head lice only to do it again the following weekend as mum hasn't had time to do the rest of the family (mum doesn't work), it's a losing battle and every time dad drops her off I plead him to speak to mum to be told mum said she will...and repeat, her poor head is bitten to pieces. Really feeling fed up having to be the one to give the "talks", have tried withdrawing but then she's the only one who suffers, not sure how to keep going for more teenage years. Any experienced views welcomed who have been through similar, will be nice to know I'm now alone