That's totally normal, OP. My dc are teens and interests/abilities change.
You've also got parent's view on "brilliantly talented" (seeing through their eyes and interpretation from others). So what one person sees as absolutely amazing from their pov, may not be absolutely amazing from anothers-and the other way round. And some extra-curriculum teachers tend to be over praising as they don't want the kid to stop-and stop paying.
For mine: Dd started interest in performing at 5yo when she first did panto, and is still interested, but more as techy. Dd2 has completely changed interests from 5 years ago. Ds started being interested in planes at 3yo, WWII at about 4yo, and is still interested, but not obsessed as he was back then. He still enjoys history and such like, but he's not more interested in future technology.
In some ways not having a major talent/interest at your dc's age is a good thing. I've known a number of children who have had, and they've been doing it 3-4 times a week, competitions, trials for big places, winning big time... and then interest drops, or they find the field is larger at 12yo than 6yo and they're no longer the next big thing, and they have nothing left. They've put everything into the one thing they now are lost.
Encourage her to take opportunities that are then, explore different things and choose what she wants to do because she loves it.