I have a 95 year old, almost deaf, mother in law who, on occasion, decides she wants to sleep all day, and I mean ALL day and the next night. Otherwise, she is fine. We call her every day to check on her. When we can't get her to answer the phone, we have to make a 100 mile round trip to check on her. Her bedroom does not have a phone jack. I put a cordless phone on her night stand (three feet from her head), but it does not wake her when she decides to sleep in. I need something I can put in her bedroom that will make a VERY LOUD noise when her phone rings. Any suggestions? Thanks.