Is she going to play the piano or the organ at church? No sense getting a piano if she's going to play the organ. You can get keyboards that do both and don't take up all the room of a piano. They are also relatively inexpensive. Is she planning to play more outside of church?
The GF was given an older piano for free cause her friend moved. All she had to pay was a couple hundred bucks to have it moved. It was in bad need of having to be tuned but the estimates for that ranged from $1000 to $1800! You can buy a darn good keyboard that doesn't need to be tuned for a lot less than $1000.