Im nearly 14 and i dont have a HOUSE key ?

Her not letting you have a key to the house you live in is just a power play on her part and you're right, she's being quite a beach about it. You describe her as being emotionally and physically abusive and bi-polar and self-centered while you have been nothing but trust-worthy. Face it, she's got some problems which she will probably never be able to live down. Look forward to fianlly leaving home and being distant from her for the rest of your days.