I know I am not exactly a mom myself, but I have recently helped my mom cut a good amount of weight. She reduced overall calories and just recently started exercising, but she has gotten great results with:
NP bulk Cla @6 per day
sesamin @ 2g twice per day
Fish oil @ 1.5 total g's of epa/dha a day
I think adding these if not already using them will help you out some.
BTW I have a lot of respect for mothers who not only take care of their children but themselves also. I think of all the time my mother has put into raising me and it amazes me she has time for anything else. So good luck and keep us up to date on your progress.