I’m a caregiver for a 102-year-old lady and her 82-year-old daughter who suffers from dementia. Am I legally responsible if something happens after I put the lock back on the fence when I leave?

Recently APS was called in because the daughter was roaming the highway. Family put up a six-foot privacy fence. On the gate they put a pad lock on. It is not locked but it goes through latch. When this is done, you can’t get out. I’m worried something might happen, and if it does, legally am I responsible if I put the lock back on when I leave? If anybody can give me advice I would greatly appreciate it.