Gypsy was always forgetting things she ought to remember.

Joy seldom did.

Gypsy was thoughtless, impulsive, always into mischief, out of it, sorry for it, and in again.
Joy did wrong deliberately, as she did everything else, and did not become penitent in a hurry.

Gypsy's temper was like a flash of lightning, hot and fierce and melting right away in the softest of summer rains.

When Joy was angry she _sulked_.