My wife has severe dementia. Lately, sometimes in the middle of the night while I am sleeping, she will leave the apartment and wander the corridor. At least once she walked into another resident's apartment and bedroom and woke her up. The resident kindly led her back to our apartment. This is an independent living senior residence. The apartment doors can be locked to keep people out, but cannot be locked to keep people in (fire laws). I'm looking for ideas on how to keep my wife home and out of trouble while I am sleeping. Thank you.