Dear Annie: I hope you and your readers have some suggestions for me, because I'm just about at the end of my rope. My 89-year-old mother, who has what her doctor calls "moderate" Alzheimer's disease, came to live with us a few months ago and needs constant supervision. We are lucky enough to have a licensed practical nurse who comes in on weekdays to be with her, but the nurse leaves at 3 p.m., which is right around the time my two teenaged kids get home from school. They've been great about pitching in, but I don't feel it's fair to ask them to give up extracurricular activities in order to keep an eye on my mom. The long and short of it is I really would like to be able to work from home in the late afternoons and early evenings.