R.S.
Hi Shirly,
I had a step daughter who did the same thing,
when she was at our house on weekends she would say to me, my mom says i dont have to do that and she also told the school i was a mean step mom. i was tring to bring her up as a lady, cross ur legs at a table, clear ur plate and wash it when u r done ect. the school called as well.
the school did councling with her. the school stopped calling and we started to get along. her mom didnt help at all and her mom would not let us be involved with any thing in her life.
but when she was at my house she acted like a lady and stopped being rude to us.
please talk to school about a councer for her or bring her to a family one ur self. it helped us hope it helps u.
i now have 2 teen boys of my own, my 16 yr old is great most times and my 19 yr old went thu a mouthy stage but is now grown out of it for the most part.
teens r harder then little ones for sure lol
best of luck
R.