Helping a firend deal with an impending loss

So roommate friend, also known as the Troll who lives under our stairs (which is even funnier, as the name carried over from when we had a basement) is dealing with some really heavy shit right now.
Troll's mom was diagnosed about a year ago with lung cancer. They underwent a few courses of treatment, they thought it was going away...thought.
The lung cancer was a alrge cell, a particularl agressive large cell, and it didn't go away. Once treatment was on hold, it came back, with a vengeance, and spread into her right lung, as well. About two weeks ago, she was informed that it was time to make the choice between quantity and quality. She could have more chemo, to prolong her time left, but she would be sick for a long time, or she could do nothing, manage the pain, and try and enjoy what, at the time, was looking to be 6 months to two years.
Last night, she started to have major problems breathing, and thought it may be a collapsed lung. She went into the ER, and they found pneumonia, under the tumor. She is on an oral antibiotic for the pneumonia, but it's looking grim. They cannot do any aggressive treatment for the pneumonia, as it could encourage the cancer to spread. They cannot do chemo at all, as it will weaken her immune system, and the infection in the pneumonia will spread.
Her specialist passed down word this morning that between the agressiveness of the cancer, the inability to operate, and the inability to effectively treat the pneumonia, she has anywhere between a few days, to maybe a month or so.
Troll is in his early-mid twenties. He has a younger sister, an older brother (who is being an ass) and a father with heart issues.
I don't know what. other than being a shoulder to cry on, I can do for him, but I am asking that any healing energies, prayers, good thoughts, etc.. be sent his way.
Thank you.