aproudbyg – A lot of us have gone through the same thing. One thing I learned from my parents -how never to treat my kids. I’m not excusing her behavior, but unfornunately this is quite common. One more issue in the Frum community that has been swept under the rug.
Try finding a mentor; speak to your Rov, if you have one. Also, call Ohel and speak to their Helpline and ask for help.