My mom and wife are still JW. My mom lives seperately and I got myself disassociated in a far away congregation. So far, the relationship with my mom and wife is as usual, except sometimes I start an argument with my wife to make her think
My mom is too old to make her realize TTATT. Hence I dont open any Bibilical Issues with her. I dont react for any of her WT activities. Just getting along with her and doing all I can for her as her son.
Had my mom been in the same congregation where I got disassociated, the elders would have poisoned her mind.
My advice is, Just maintain your relationship with your mom and make the best out of it. Its totally impossible to make an old woman realize that they are in a cult.