I recently lost my father to stage 4 stomach cancer. He was not jaundiced, however he did have a tube in his stomach (g tube) to drain the bile that he would have otherwise been constantly vomiting up. It drained into a bag which had to be emptied a few times per day. I used the website www.brainhospice.com to help in terms of what to expect at the end of life. Although it is for people with brain cancer, generally, in the end, it seems to be the same for all.
The hospice staff can help tell you what you might expect specifically as it relates to your loved one. If she is eating anything by mouth now, eventually, she will stop eating and drinking. This is somewhat difficult to take, as we tend to equate health and comfort with food and water, However, in dying people, as the body begins to shut down and the person becomes weaker, the process of digestion ceases and it can actually bring discomfort to force food/water.
Expect your loved one to become weaker and thinner. She may eventually go into a coma or semi coma. The most important things you can do are to tell her you love her, be with her, hold her hand, give her a massage, and finally, be ready to give her permission to leave this world. It is said that hearing is one of the last things to go and that even those who are in comas can hear, so be mindful of that and keeping talking to her, play favorite music, etc.
The end of life can actually be a special and sacred time. I am sure your Hospice staff can assist you and be able to answer all of your questions as you and your loved one enter this final stage. Blessings to all of you.