Dear Annie: I have one surviving parent nearing 90 years old, who until five years ago was able to live completely independently. A serious injury greatly reduced Dad's mobility and caused chronic pain and hearing impairment. But he is mentally competent and able to live at home with some help. I live a couple of hours away, but I talk to Dad daily, supply nutritionally correct homemade frozen meals and make regular trips to help with house and yard work, minor repairs, appointments, errands and so forth. I also have a job and provide limited care for an in-law, as well, and my husband has serious chronic health issues that also require significant care. I am spread thin, and I am tired.