Pneumonia after chemo treatment

I joined this site on behalf of my sister. She was diagnosed to have a stage4 breast cancer and her chemo treatment was finished first week of October 2008. A week after that, she began to complain that her side where they took her breast is kind of sore whenever she cough or laugh a little. The Doctor told her that it's normal because the cut is probably healing. So, she ignored it for a little while. But, 3 weeks ago, she can no longer bear the pain. She told my mother that she already felt so week and can't seem to move herself around. They rush her to the hospital, have an X-ray and the Doctor said that she has Pneumonia. So what the Doctors did is they made a hole on her side so they can put a tube connecting to her lungs to drain the water from her lungs because they said that her lungs is about to get full. It's been almost 3 weeks that she has that tube on her side, and she said that it's so painful. She didn't want to talk any longer because it hurts when she talks. It hurts when she moves. I think my question is, do you think this is normal? I feel like she had gone worse. She is slowly drifting away. It hurts me hearing her telling us that she can't take the pain anymore. I was wondering if that tube that they inserted on her is the right thing to do to drain her lungs. And it's been 3 weeks!

I don't know what else to do or tell her because I am here in the US and she is in the Philippines. She has 2 sons, 7 & 2... The last time I called, she don't even want to talk anymore...

I have read about pneumonia, but I haven't read/found any article about putting a tube to drain the lungs... Any thoughts would be highly appreciated.