<human>: Can you provide a brief overview of the text?

As of yesterday, I found out that my best friend's mom has stage 4 lung cancer.  We haven't been friends for more than 6 months, but we instantly clicked and we've gotten really close really fast.  She's like the sister I've never had.  I knew her mom had had lung cancer when my friend was a baby and lived, and I knew that it had came back, but we didn't know the stage until now.

I haven't dealt with cancer since my grandpa had lung cancer and passed away in 2008.  I'm an only child and was super close with my grandparents so my parents kind of sheltered me from the in depth details.

I've had all 4 of my grandparents pass away, so I'm no stranger to dealing with grief.  I have anxiety and my depression is getting a lot better (thank god), so I kind of know what not to say to people in sensitive emotional circumstances I guess?  I know what I would want someone to say to me I guess.

I just don't know what to do.  She's so young and her mom is kind of all she has.  I don't know how to act.  I want to act like everything is normal and be a sense of normality in her life but I feel like there's a fine line between that and acting like you're ignoring the situation.  

Is it okay to give her and her mom things?  Like little just because gifts, like books or candles?  Maybe bake something?  Or is that too much of a "hey your life sucks here's some cookies" kind of thing???

What is the protocol for helping my friend cope with her mom's diagnosis?  So few people survive stage 4 lung cancer.  I'm just so sad and upset this is happening to her and her mom, I'm at a loss for what to do.

I realize being there is the best and easiest thing, but I don't want to do just that.  I want to support them as much as humanly possible because they need and deserve it.
<bot>: my best friend's mom has stage 4 lung cancer and i'm having trouble figuring out how to help her/them cope with the diagnosis.