The hardest thing i have yet to come to terms with regarding my DF is similar to what I fear for your situation.
The day before my DF my mother would talk to me, the day after she wouldn't. To clarify, she knew what was going on in my life.
I have a hard time forgiving her for that. It's simply fear of man (the org), not fear of god. In my case it was simply celebrating holidays, basically, apostasy, but waiting until the DF to cease contact.