Mom is now in Hospice care

My mom is now in home hospice care, she was transferred to the hospice house two weeks because her pain was so bad, they believe she has a small bowel obstruction. They wanted to keep her a while but she wanted to go home so we brought her home last Tuesday. She eats next to nothing , maybe 1 cracker all day and drinks very little. friday night she started projectile vomiting and stays nauseated. She seems disoriented and I’m scared. Could it be she is being over medicated or is it most likely the cancer? I’m so worried , I don’t know what to look for in the end stages, can someone please let me know their experiences ?
Thanks
Susan