You know Renee there is no need to split up your family over an apparent disagreement over religious beliefs, half of my family are not JWS and even though we
were all brought up in it from childhood, we function fine as a family, perhaps not the model of closeness but nevertheless were there to help one and another out.
This indifference in ideologies should not destroy a loving and caring relationship with your parents, it is simply not necessary and hurts unintentionally both parties.
Maybe it's the expressed notion by your mother that if your not going to take part of the family religion that the family can no longer exist, that is simply not the case.
Maybe you should express your love for your mother along with some respect for her recent decision and see what comes of it ......good luck