I would send her a message and suggest that she call you at a certain time to see what is on her mind. If she begins the conversation w/the fact that she has no way to contact the girls, then politely remind her that the email addresses and phone numbers have remained the same. That she needs to mend the fences w/her girls on her own. That the girls are old enough to make their own decisions as to whether or not they wish to have contact w/their mother. I would then leave the conversation on this subject right there and let her digest that.
I would then ask if there was something else that she wished to discuss and if she doesn't have anything else on her mind, politely end the call.
I think she's finally coming to realize that she's made a mess of things w/her daughters and is trying to reach out to them. I think this one call should clear up some things for her, i.e., the consequences of her actions burned bridges not only w/you, but her girls as well.
Keep the conversation short, but on point. I know you can do this.
Just my two cents.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
