Raven, cults that make mothers treat their children as if dead are absolutely despicable. I feel your sadness in your post. Just don't let it make you feel as if you're not worthy of being loved because your mother rejected you. That is a deep pain.
You have your partner, he loves you. Your new home and your new job! You achieved all this while leaving the cult and coping with your JW family, well done you! Stunning accomplishments. You should be proud of yourself.
It hurts, bring shunned by a mother. It will turn to anger, yes, eventually but anger gives you strength to cope. Really it will. Hang in there, nobody knows what the future holds, she may change. She may not, mine didn't, but you should have a great life anyway and know that lots of people have done it and made it. You'll be fine, look how much you've achieved already. Just be kind to yourself while you still feel sad, this takes time.