My take had been: Why bother going to study abroad, if it’s going to be London. You might as well just go to the opposite coast in the U.S. 
So, yes, I would very much favor a foreign-language country, as that adds so many additional layers to the “studying abroad” experience, beyond being “name only”. And given her French language level, this will be the absolute icing on the cake as far as foreign language proficiency.