M.D.
Call her up and see if there are any hidden problems that she has. I had this problem with my MIL and it was because she didn't like the way I organize my house - it is crazy chaos, well 3 kids mentally under the age of 4 doesn't help. So just give her a call and find out it is the only way to find out what is going on, if you don't feel comfortable making the call have your husband talk to them. Hope this helps out.
M.
mom to Ryan 9 1/2 (Down syndrome, severe ADHD, Bipolar, anxiety, GERD, lactose intolerance, asthma, allergies)
Abbey and Alexa 3 1/2 my "normal" identical twins