French words, depending where you are, are bastardized oft times.
My personal fave are some surnames like harness driver Mike Lachance. His name is la-shance, but on TV anywhere south of Quebec it is La- Chance, like having a chance to win. I also met a fella last-named "Benoit" from the south once and called him by his French name until he corrected me.
If Ballet's were not popular in France and some English country took over the word, I would bet we would be calling it like the COO of Churchill and the boys do.
Then again, I am not one for the ballet, so who cares.