I only really have Lydia here to offer! She's the middle class sister of the Ivanov triplets, and the most likely one to interact. She's also a (former) healer herself, it was...suggested that she leave Hogsmeade Hospital when she got pregnant with her first, so she might be a little jealous of Delilah's continued employment. Her eldest child is three this year, and she's pregnant with her second (and third, but she doesn't know that part yet).

My only other MC characters are students, and I don't often send my UC folk to the hospital, unfortunately.