I think I'm going to get some thumbs down for this but.......
Raising children is an absolutely bi+ch. You never get any sleep, you have the listen to screaming all day, they wake up in the middle of the night and we do it because we love them beyond anything (obviously). I have possibly the easiest life ever.... I have 2 kids under 3 (who are pretty laid back), I don't work but I also have help from nannies, not that I just offload my kids to them but for example if I have to go out for an appointment or into my husbands company for a few hours or even if I just need to get out they are there to step in for a few hours I also have cleaners and that sort of thing. So given this I am probably not the best advocate of an overworked mom.
However, when you have children they are the centre of your life and you sort of loose whatever else you used to talk about so in that respect I sort of can understand how she will never stop blabbing on about her children, to be honest in most cases it is because they really have nothing else going on in their lives. As parents we don't really understand that people have less interest in the daily bowel movements and eating patterns of our children.
I also, find that mothers that stay at home, whilst yes it is tiring really lack the motivation to actually get up off the couch as you said and go and do anything at all. And along with that comes the pissing and moaning that you are too busy because your child interupts you a few times during the 5 hours Oprah marathon on that day.
A lot of the time mothers feel that they are the only ones that are allowed to be busy and the child free working girls should be free to have lunch at the other mothers choosing because 'what else could they possibly have going on in their day'. Its like once you become a parent you don't understand why it is possible for anyone else to ever be stressed.
In short you're damned of you do damned if you don't.
In your situation I would say to her something along the lines of:
- "isn't sitting on your butt all day slowing down? gosh give the working peoople a chance to catch up to your busy lifestyle"
- "I understand how you feel, toasting marshmallows is a pretty hectic way to spend a summer, you mae me feel lazy about working 9-5"
- Or you could say something like oh did you see Oprah today? (like you were shocked by its content) and when she anwers yes say (in a dissapointed tone) "ohhh I wish I could have seen it but being part of the workforce means I am busy in the one hour time bracket, I am really run off my feet. I wish I could sit on my butt all day like you do"
People with no drive and a bad attitude about those who don't have kids piss me off. How 'bout doing some kind of work if you really are that worried.