Agree with Bun. You must have done something real shitty to her. Best you move on with your life
Hmmm. Your explanation clarifies the placement of the Sun and combust Mercury in Cancer 12th, Moon on the asc and the Mom finding you distastful (Mars recieves Sun from its fall).
No doubt you're mourning the loss of your friend and you feel all alone but the Moon in 1st suggests that you should focus on yourself for the time being.
The moons next aspect will be a square to Mars which means that there may be another run in with the Mother in the future
The aspect between Moon and Mars is 12 degrees off and the aspect occurs in fixed signs. This suggest a very long term period of either 12 months/12 years. It's not something that is likely to transpire any time soon.
She is in the stronger position than you and is the planet Mars to boot. She is definitely spoiling for a fight.She will have the majority of the power in the conflict.
My suggestion then would be not to engage her in a fight and try to diffuse the situation if she insists. If it seems like she is obstinate, retreat/get the hell outta there. Maintaining control of yourself and the words you say are important. Don't grovel because it won't work.
Trying to appeal to the mother won't work either I'm sorry to say.
Mom is Mars who is in its fixed water domicile. Ice. Add to it Mars is stationary direct - she is like the polar ice caps and very powerful. She is also angular and out of sect which ups her ability to act.
Her hatred for you is deep and permanent. She didn't like you taking her little daughter's innocence AT ALL.