I don't know what to do. My mom is 76 yrs old. Mom lost her husband 2 yrs ago from cancer. My 3 older sisters, my wife and I all try to do our part to help her, engage her and take her shopping and out to dinner. When my wife and I moved back into the house so she wouldn't have to leave her home, we renovated and bought off the reverse mortgage that she was in over her head with. So we own the house now. It's a fairly large home and it gives enough separation without the feeling of being "left alone". But lately, she has been staying in her bedroom with the shades down. Her entire section of the house is dark. All the blinds are down and she doesn't let any light in. She is depressed. If she doesn't have anywhere to go - she stays in that bedroom all. day. long. I call and check on her and she seems to be fine. I can't always take her out 24/7 and if she is alone for more than 1 day - she goes into a deep depression. She's been smoking much more, like chain smoking now and I have seen small glasses left on the kitchen that had leftover booze in it in the morning. I'm worried.
Everyone thinks she's just fine, but I'm here to see it, witness it and she's a total different person than what my other sisters see. I'm the main caregiver - not that she is sick, but she is without a car and declining in movement/mobility.
Any suggestions to approach this tactfully and respectively?