My Mom Needs Help!

My mom is very over weight and is out of control. She has very poor eating habits and it is effecting me while I am home for the summer as well. She works late so we usually do not eat dinner until around 9. We go out to eat just about every night because it is just easier and quicker but we are missing a lot of the healthy foods that we need. She always does not find the time to exercise and she does not like to sweat! How can I help my mom? I am afraid she is going down the wrong path.