<human>: Hey Reddit. Throwaway, because some people know my username and I don't really want to tip off who I am any more than I have to.

Here's the story: My mom went into the ER Thursday night with shortness of breath, turns out her right lung is filled with fluid. Stays overnight in the ICU, gets more than a liter of fluid drained the next day. Cat scan shows **two masses in her right lung.**

Right now, we're waiting for a cytology report to come back, but both my parents are convinced it's lung cancer (they're both doctors themselves and there's some family history on my Mom's side.)

I'm pretty numb right now, but I've broken down a few times when I'm alone. I want to do something productive. When I showed up today at the hospital she was weak, but she started telling me about her fantasy of my future kids with my future wife (current girlfriend, i bought the ring but she doesn't know yet, i'm pretty certain she'll say yes.) My mom is in her early sixties and is totally healthy otherwise, this is coming as a shock.

Basically, the question is what can I do to remember her - what can I get from her... people who've been in this situation will know what I'm talking about. What thing do you regret most not getting from a loved one who is about to possibly die very suddenly, younger than they should? Help me out here.

Can you condense the text into a few key points?
<bot>: mom may be diagnosed with cancer, worried she'll pass soon, what can I do now that I wish I would have done later?