I finally stood up to SIL about her off-hand remarks and unneeded/asked for advice! This Christmas, I was feeding my son a sandwich because I didn't want him to wait until the late dinner. I hear her say "Mommy is finally feeding you!", I just stopped and asked, "What are you trying to say?" I waited a minute and said "Because if you are trying to once again criticize my parenting let me just say I don't care. You throw your little comments and act like you aren't going to get called out. I am doing it right now. I am not going to listen to your unasked advice,your opinions or catty remarks. Save your breath and my time. When I need help,it won't be from someone who doesn't even know how to make a bottle." I kept quiet for so long as to not rock the boat, after dealing with her shit...I'm willing to sink the boat!