Is it that she tried for a long time to have a sibling for her daughter, then resorted to ivf, but wasn't expecting to end up with twins plus the age gap? I don't really know much about her background and she'd already had them by the time she popped up on my radar.
Twins are more work, being a bit older/peri with still young kids can be hard work, having kids at very different stages is hard work. There are also, of course, a lot of lovely things about having kids, but she seems quite focussed on the difficult bits. Ultimately, kids don't ask to be born, so you have to suck it up and get the duck on with it. She comes across as quite resentful of all of them.
Also, duck off with the puffed sleeve dresses, Alison. Puffed sleeves are not your friend, take it from another stocky woman with a short neck.