[It's an entire sentence though, long enough to need a comma, two separate clauses on one single topic; and there's a note of something besides bland dismissal, besides detachment, behind it.

Letty's pleasure is more prickly than most peoples', but she nods in approval.]

Much better. I knew you had it in you.

You should try using your words more often, you might actually get what you want faster.

[Not that Letty intends to comply, of course, but she approves.]