I wondered the same thing, too. The pictures I saw showed the same 5 sisters, and I had the impression it was a community picture, though I’m certainly not sure. I was wondering how Cor Orans might be affecting them and whether they are in desperate need of vocations. In addition, I wonder if the monks feel like they have to sell it so that they would have the money to take care of their senior members.
Oh, aroosi beat me to the post. If there are only 5 sisters, then they may be forced to merge with another community, making the purchase a moot point.
In saying this, I really do feel badly for the communities that reach this point. It must involve a lot of suffering to be one of just a handful left.