Hey Bozdickens, my first thought was, "I wonder if she feels like she has to share because of some kind of financial worry." I don't know why I wondered, I just did. So my same question is to you.

MickeyCheeky's question is valid! Why do you think you feel the need to do it?

Also, it's understandable to me, that you might feel a little miffed, that you share all your food with your mom and she does not share with you.