She could certainly succeed offensively at the collegiate level. But for being the best professional possible, she needs to be quicker to take complete advantage of her being an outside threat who can drive off of that. I believe you can actually teach quickness, up to a point. Not just exercises that develop quick twitch and explosiveness, but putting her in competitive situations that emphasize attacking from the 3 and 4 positions--in other words, motion offense--that would help her think more in the attacking mode. I think if she chose Baylor instead, she wouldn't get that nearly so much.
What the tape doesn't show at all is how well she rebounds, how well she jumps (at 6'5" in high school you don't have to jump very high!), how physical she is, etc. And how instinctive she is at following the ball off the rim, as well as how quick she is as a defender. A kid blessed with a body like that should use it by being absolutely ferocious and maintaining a very high motor.
In short, from the 2 minutes here, she's got a huge upside, but definitely needs to continue to progress, as Nan alerts above. Of course, all reports are that she's a fantastic kid and would thrive at UConn. Hope it works out for everyone.