I suppose the congregation considers us inactive. My husband's family does. My family is kind of weird, they are really hardline, and believe if a person is completely inactive for a long period of time, they are no longer "witnessing," thus no longer a "witness." After having been out of the organization for this length of time, they treat us just like the rest of their worldly family and will socialize with us, speak with us regularly, go out to dinner, etc. Sometimes they try to "witness" to us as if we have never heard any of their doctrine.
We're on the same page, he just doesn't talk about it much. I talk and write about it regularly in hopes somebody will stop and think for a minute. Sometimes they do.
I don't think there's anything wrong with bitterness. It's a normal step in the progression of emotions that occur with loss. It's only unhealthy if you get stuck there. If she has a grandchild she doesn't get to see... well that would make me quite bitter too.
I hope in time her son does wake up. The Watchtower is no place to raise a kid.