Well, we've avoided what could have been a crisis with my aunt this evening. My mom tried to call her at 4:30 this afternoon, then again just after 8pm, getting no answer. Mom called me and I called my aunt's number, let it ring 30 times, and got no answer. Called my mom back, she called security there at the retirement community, and they checked on my aunt, who was fine. They determined that the phone was working, but we don't know if a) she didn't hear it, or b) was choosing not to answer. Either way, it caused some anxiety that my mother does not need.
Now, I'm going to bed.