I don't know about that specific outfit but the gold standard for those programs is
Girls for Sail that does RYA instruction. Have run into their
boats a few times in the
Caribbean and the instructors seem top notch and the students all seem like their having a great time.
That said, if you could give us more information on what you know and what you don't know, and what your goals are we could probably give you better
advice on what program would be a good fit. Choosing one based on it being gender-specific might not be in your set interests depending on what it is you want to get out of it.
Where are you located? Are you interested in
power or sail? How far do you want to travel as a
live aboard? Stuff like that would be helpful.