[A pony named Cloud? Were they as nice and calm as their name? Even if they weren't, and Pinkie wasn't really trying to, Fluttershy would feel bad now if she didn't come for at least some of the party.]

I'm sure I can manage it for a little bit. If things really are that stressful for them, maybe having a party can help them relax.

[Granted, Pinkie's parties were the opposite of 'calming' usually, but they were worth it all the same.]