Last I heard she was living in a caravan. That's it.
They have now brought Louise Jameson in as Rhona's mother, and they have Paddy's father, and Rodney, Eric, and Faith, but that's not enough to make up for what you mention. I think another problem is the soaps no longer are willing to write older characters as older characters. You have people who are 70 or 80 written as being much younger. There is no real sense of generations, history, or community.
Speaking of that, I just saw that a few weeks ago, someone put up an episode from September 1989...VERY hard to find anything from that period. There are some audio and visual issues, very tinny sound, but I think you will still enjoy it.