>>532648435
>first skill?
Uh? The first skill is fine, then you lock her with Summer BB and you don't need to use it again.
The biggest problem is that as she is now, she doesn't have more than a 46% buster up and 40% crit up, which is not bad, but not exactly gamebreaking considering her Buster is at half strength.
Still, with Summer Skadi+Koyan she would have a further 15% attack, 65% Buster and 150% crit up.
Plus they would feed her the necessary NP charge to use her 3rd skill and leave the 2nd one (the 300% NP charge skill) for later.