Monster In Law

How does one deal with annoying In laws. My boyfriend's mom hates everything I do when it comes to caring for her son. She thinks my cooking has to much spice, my ironing sucks, and I cant mop like she can. She would call me just to let me know what she cooked, and how everyone loves it. Just the other day she needed a ride to the mall, and her other daughter in law refused to take her, and for the first time I heard this woman say something nice about me to her son, on how if it was me she wouldn't have missed the sale mind you I was home. She wont stop calling me now, my boyfriend thinks this is funny...how do I deal with this Help?