Hi, I'm Aliza and I'm a Medical Librarian. I'm retired, but still do research for people, even for people on this site. I researched for you re hospices in Mexico and found the following URL: http://www.hospicesma.org/services.php . It is a hospice service located in Mexico. I think that it is a service that provides hospice service in different locales rather than a specific hospice located in one place, but you will have to check with them. I can't do further research for you because they request specifics about the patient and the treating physician(s)
Carm is perhaps the best resource on this site for what should be done for a patient medically. We're lucky to have him as an advisor! I'm sure the advice he gave you is excellent. I hope your mother is able to be pain free soon, hospice or not. If you do research the hospice option further, and it is helpful, please take a moment to let me know. I'll give you my personal email. I keep a list of resources available for the time when this site will be able to offer that as an inclusive feature. Thank you and I hope your mother gets through this difficult time as peacefully as she can and I wish you and your family to go from strength to strength.