Wow....all that time & she hasn't even asked about the kids or really tried to get together with them....What a schmuck.
I have to admit when I left my husband (my daughter had already moved out of state) I wasn't sure what she thought of me for doing that. It took awhile to know that she was ok with it & actually understood. That was a relief for me because his mom thought I was evil & that her son was the saint.
Sounds like your kids could care less if they ever hear from their mom? They are probably feeling so much relief from the stress they don't want to go back to that & they may feel so.much relief that they aren't mourning as they may not even see/feel it as a loss.