How will I know when the end is near for her?

The body prepares to shut itself down in a very organized fashion. Sleep agitation, changes in hydration and nutrition are normal, including not wanting any food then asking for a favorite meal the day of death. Try reading "The Final Year The Final Moment" or "How We Die" or "Gone From My Sight." Knowing what's going to happen won't make your loss any easier, but understanding what the body is doing can be very helpful. She may begin sleeping more and more, you may find her talking to persons long gone, reaching out as though she is trying to touch someone, or having increased agitation. She may become semi-comatose or be alert. She may have bursts or energy or become bed bound. Hospice will evaluate her for pain or any medication adjustments and are available to you 24 hours a day. I'm sorry to hear about your loved one.

Thank you, TamCummings99, very much.