Yes. It's because staying at home she must have had her negative thoughts, and with time, everywhere you look, makes you think bad things, this is how thoughts are triggered. It happened to me, but I've been on studies away for some months and I feel comfortable again at my old home at my parents. So it totally normal to take a vacation or switch your lifestyle completely in order to help those thoughts vanish.
Unfortunately for me holidays and time away from home only gave temporary relief. I was convinced moving away would solve all my problems. Luckily I eventually realised that wherever I went my problems would always be with me until I recognised and dealt with them. I was really trying to escape myself. Even though I now enjoy my holidays, I still feel depressed for a few days when home.
hi bill sorry to see your wife is unwell with depression if you think she is bipolar try and get her to see her doctor ! the best thing is to try and support her as much as you can ! get as much help to enable you to deal with how your wife is just now the best thing you can do is to continue support her and hopefully things will improve over time take care and i hope things get better david !