Anonymous wrote:OP, do you need to keep her in her bed or in her room? There is a difference. There are a lot of reasons for the elderly to want to get up in the middle of the night.
Is she sleep-walking or just restless? Is she in search of something? Is she getting up to go to the bathroom? Are her sleep patterns out of whack? Does she have a sleep apnea?
It sounds like your mom is reasonably cogent and alert. If you made her room secure, so that she couldn't leave (alarm on door, alarm on window, child-proof lock on window), would she happily stay in her room? If you put a mini-fridge in her room, gave her a recliner that she could use to stretch out in (those ones that lift you into a standing position are great but $$$), and a tv would that help keep her contented and happy to stay in her room where you knew she would be safe?
When she gets up, she is confused about what she got up for.