We have four children, all different. Two live close and we see them at least once a week. One an hour's drive away, see them perhaps once every couple of months, but DS does ring once a fortnight or so. Last child has moved to Spain and doesn't answer emails or texts except very occasionally. We haven't fallen out at all, just he sees no reason to include us in his life. Their two children occasionally text and say they miss us, but now the eldest has her own phone, she doesn't often reply to texts. DS does not believe in the safety of video calls, and since he has ignored all requests for an address, we don't even know where they are. It is hard, gets to you, but you have to keep going with other activities, and we are blessed with seeing the other three.