Dealing with death while pregnant?

About a year ago (2 weeks before my wedding) my mom was diagnosed with renal cell carcinoma (kidney cancer). It had spread to both her lungs, , and brain. She has been thru surgery and multiple brain radiation as well as other treatments similar to chemotherapy. Last November, my husband and I found out that we are expecting a little girl the summer of 2011. To help my dad out and spend more time with my mom my husband and I decided to move in with my parents this past Feb. The past few months she has declined rapidly.. we have been to the hospital 3 times in the past month. She has been thru everything from septic shock to an infection that required emergency surgery to remove a m of necrotic tissue the size of a gfruit. She has opted not to do any more treatment ( I cant blame her) and hospice has been called in. It truly breaks my heart that I often have to convince her to eat, take her meds, and watch her slowly decline mentally and physically. I am overwhelmed, exhausted, and sad that my mom will probably not be able to be present for the birth of her first and only granddaughter. ( My younger and only other sibling ped away 6 1/2 years ago in a hiking accident). I am truly excited to be mom and want to enjoy the experiences of being pregnant such as baby showers and picking baby names but I am so overwhelmed with emotions. My husband and I go to a couples counselor and I am open to my obgyn about the situation. I would appreciate any advice/help with dealing with death while 30 weeks pregnant...