Skysue, you can not take what this woman says personally. People who give underhanded verbal jabs have a not so hidden feeling of hostility/anger. Their jabs are about them, not you. She may feel anger because she is not home to care for her child or has other issues of insecurity and you are the one who she targets to make herself feel better.
I have one of these parents. She says little things to her 31/2 child which are attempts to undermine my authority with her child. They sound innocent enough, but I have lots of experience working with women and I know a catty/hostile remark when I hear it. I do not give her the attention she obviously wants when she makes these remarks. I consider the source and am glad I'm not like that.
So please, do not take what she says to heart. YOU know what works, you have experience enough to know what doesn't so leave the snide remarks at the feet of the woman who made them. Do not give her permission to make you feel bad. And Really, 40 pages??? Some people love to take the hardest/slowest route to an achievement so they feel like they have accomplished something.