I thought they were more into abolishing them...

In the biographical introduction to Alexandra David-Néel (a fascinating woman, by the way), Donald Lopez, who is generally fairly clued-in, says among other things: "[She] was educated in a Calvinist convent before studying Indian and Chinese philosophy at the Sorbonne [...]"

An (admittedly brief) web search didn't turn up anything except stuff about abolishing monasteries and one photo of a "Calvinist convent" in Smarhon' in Belarus, with no other details, and the online information I found on David-Néel doesn't mention her early education.

Does anybody have a theory, either about the existence of Calvinist convents, or about what Lopez actually meant? (It's not like I'm researching this stuff -- I'm just curious.)