They need to also consider the possibility of relocating. This is something they may have to do on account of their environment. If you look around and cannot see a senior center, or if there are no other chances for them to socialize, then it shall be time to think of other locations. It is important for them to, first of all, identify a retirement community where they feel comfortable and have all their needs taken care of, after which you can arrange for their longer stay there. This is how they shall live a more fulfilled life going forth.