I have a 10yr old DSD. My DSD said to my DH that she called me her step mummy in front of her mum and her mum went ballistic at her for calling me that. I've been with my DH (her dad) for 6 yrs, married for 2. Always been nice to DSD, treating her as my own (within reason obviously). We never encourage her to call me mum at all, she calls me by my name which I think is right. So I was quite touched to find out she referred to me as such but sad she was told off for it. She also said her mum went mad at her because she found out I blow dried her hair and that I should not be doing her hair..I mean, what is wrong with some biological mums?! Is it jealousy? I just don't understand it.