[quote=ImportantNobody]
Uncharacteristic much?Hmm...and no comment on my possible yuri dating sim game? Well you won't get one now. Harumph! *crosses my arms*
[/quote]

Lightning has one characteristic: Stoic

The whole game so far has been Lightning pretty much rolling her eyes and being annoyed with every single person she talks to because all of them dump their silly problems in her lap. So when she says "I feel like singing and dancing" imagine it coming from someone who sounds even more bored than Paine. 

So it's pretty in character.