i am in the same position.
my grandaughters were removed from their home by social services to my care and my daughter decided to leave her husband at the same time.
this was in 2015 and they lived with me.
things went well for several years but then the situation got awkward and my relationship with my daughter broke down. one sunday just before christmas last year my daughter and grandaughters went out and that was the last i saw of them.
my daughter arranged redirection of their post but i wasn't told where the post was redirected.
i have texted my grandaughters to wish them a happy christmas, happy easter and happy birthday but haven't had a response.
i spoke to my son very recently and he tells me he hasn't heard from his sister either.
this has upset me greatly as i am not able to see my grandaughters (19 and 15) or to know how they're getting on.
but i am "leaving the door open" by contacting my grandaughters - i would love to know how they are but have no way of finding out.
By special request, let’s discuss our favourite Classic Music and why?

. It's outrageous and even more outrageous that she continues to accept financial gifts and assistance when she wants too.