Ok, since we're happily nitpicking anyway, how about this:
Making the hearts float up slightly pixel-by-pixel before they pop, to make them feel a bit more 'alive' (I know they are not, but you get it) I think that would make it all feel more animated-y
Also while you're animating her, I can see she's trying to seduce us to think she's all nice, but I wanna see her eat some stolen cake!

Also, really requesting more arts : D I really wanna see some more!