Oh Glenda you are not alone, I have a very good friend from childhood we meet up every few weeks for a lunch but I estimate she does 75% of the talking, it would be interesting to record it. I touch on my family, but she talks non stop about her daughter, an only child and then on to her extended family, friends and colleagues of her daughter, who I don't know from Adam, details about their lives, it's hard to be interested in people you don't know. It is, as you say quite one sided. Having said that she's a good friend and we have a shared history but it would be nice to get on to other subjects.
My worst experience regarding this sort of situation, occurred a couple of years back. We had very close friends staying with us, they were due to depart down under for good. My friend asks if it was okay for another friend of theirs to drop by at our house to say goodbye as she was in the area. Ok says I. The friend, who I also knew but in an an acquitance sort of way, arrives and then spends the next 2 and a half hours talking about herself, her aged parents, her children, her grandchild, her house, her job, her son and daughters' jobs, how much money they were making, her daughter's boyfriend, their marriage plans blah, blah! Sitting in my house, barely acknowledging our presence, not asking anything about our mutual friends' new life, their children, just on and on about herself. My friend kept looking at her watch as we were going out to dinner. When she finally went, we all concluded that she was both rude and boring and her departure couldn't come soon enough.