I happen to know two priests, one a diocesan priest (I’m not sure where he was ordained) who is now retired after a career as a Navy chaplain and lives in a 3-bedroom home he owns, drives a car he owns, etc., with no vow of poverty involved; the other is a Jesuit, who has indeed taken a vow of poverty (but also doesn’t do parish priest work, but is instead in hospital chaplaincy) but has available to him anything he needs – car, computer, etc. – provided by the order. It’s quite a contrast between the two; both have what they need, and yet one can own it while the other doesn’t even own the shirt on his back. (The Jesuit also just finally completed his training – it’s an 11-year process. Rigorous doesn’t even begin to describe it, far more than the education most religious people of any denomination or faith undergo.)
I can understand a diocese wanting to close a convent that only has three nuns living in it, however. It’s not like they were put out on the street. And yes, I appreciate that the elderly nuns wanted to live out their lives in the place they had called home probably for most of their lives; but that’s a luxury granted to few people. There’s certainly no question that they will be well cared for wherever they are.