Yeah, they just float around her like "weeeee!"
And she just ignores them, too!
Maybe you should get another female betta so she has a fish to interact with and you can watch them. It's cool watching mine occasionally dance around each other. The crowntail is definitely the top of the pecking order, and the halfmoon I just got is at the bottom (and she's the largest, go figure...). They dance now and then just to remind each other of who is in charge of who.