<human>: My Mom and Dad have been divorced since I was 12; I ended up living with my Dad and had weekly visits with my Mom until middle school. So basically after elementary school, I have seen my Mom less and less thus having little contact with my Mom. 

As I grew older, both my Dad and Mom re-married and my Mom had child with her husband. So of course, my relationship with my Mom became non-existent since she focused on her new family, which to be honest, was fine with me. Though, something changed as I graduated high school and entered college; my Mom was slowly coming back into my life and we hung out more as college graduation was creeping around. 

Fast-forward to now, my Mom and I have been in constant contact and whenever we feel like it, we would grab lunch or do some shopping. Then suddenly out of the blue, she called me and said she had a year or two live because of illness her doctors recently discovered; my mouth dropped and I became frozen. We met up the next day and for an hour in the park, she went through the details. I tried to swallow my tears, but it came pouring out right after we talked. Here we were, coming back into other lives, looking forward to having her be a part of my life and in my future (being at my wedding, seeing my future kids, etc) and it just all fell apart. 

As of now, I THINK have accepted the situation and willing to do whatever I need to do. I plan on having regular meet ups with her (every 2 weeks or so) before the day comes. What's also running through my mind is her young daughter and her husband, who are going to suffer the most. My question is should I make more of an effort to hang out with her more? Should I just be in the background and let have her time with her daughter and husband? What does she expect from me?

Can you summarize the given text in a few sentences?
<bot>: My estranged-mother and I have recently come back into each other's lives but my mom just recently found out she only has a year or two to live. What should I do and how should I feel?