Hi, this is my first post. I looked up my issues online and this website seems to be the place to seek advice. I've been living with my partner for about 18 months and together for two years. She has an eight year old from a previous relationship. Initially I struggled to bond with her daughter. They had been on their own since the girl was a few months old, so had a pretty tight relationship. In fact the little girl has been treated more like an adult and a 'friend' by her than a daughter. I don't have kids so it was tough. At first I'll be honest I couldn't wait until the SD went to her dads. She was more of a hinderence unfortunately. We did bond over time and had a pretty good relationship, but as she grows up she has become really difficult to continue growing this bond with. She seems to have no respect for me as an adult and talks to me in a way I don't find acceptable for a child to talk to an adult. Often really difficult and rude which is odd for someone so young but again she has been treated like an adult by her mum and thinks it fine. When I raise issues with my partner she says my attitude is wrong. I am only treating her in a way that I would my own daughter, I'm not the evil step father.
I do plan to marry her mum but in recent times the relationship between me and SD is unbearable. I am in the dark as to how to make this liveable again, I really see big problems in our future if this doesn't improve and to be honest, the wedding is hanging in the balance. Am I being selfish or wrong here or are these normal issues?