What would be the best thing to say?

My mother peacefully ped away over the summer, leaving me missing her terribly because she was a wonderful mother and my best friend. She and her sister were never close, and during the few times her sister came over, it was mostly about her and not much else. She even went so far as to say in a snide tone to my mother how weak she was , despite being at deaths' door. I wanted to simply order her out of the house for hearing this. Now, that she has been gone , she gives crocodile tears, in saying how much she did for her. What would you do?