I am confused on this as well. My mother is an ungrateful woman who never shows appreciation for anything. I spent 10 straight hours cleaning her house once as a surprise once and she had the nerve to tell me that I had at least started the job. Once when my brother and I were younger we pooled all our money together (which isn't much for young kids) and did chores for another $5 to get my mom a birthday present. I rode my bike to the store and bought her favorite choclate covered cherries, a card, and a small bouqet of flowers. We hid the gifts and when she woke up in the morning we brought her the gifts and she just sort of looked at them and didn't really say anything. We both went to school that day very very upset.
In other words. I have gievn up on my mother, but now it's almost Mother's Day and Erik's mom makes a huge deal of these holidays and I have no idea what to do. Her birthday is also very near by. I think I am going to just sign a card from both of us with a little present that she will like.