She appreciates being let in on the secret, if only because Eden felt like she'd missed a lot from being... black out drunk. Very active and playful in most of the time, but still in that state too quickly to remember the practicing.

So of course she nods and taps where her heart would be, saying, "I won't spoil the surprise for anyone else. I'm very good at keeping secrets. My grandmother was the person people went to for medical needs, so it was very important I learned to do that."

See, she didn't even spoil a villager's secret for an example, even though no one would probably ever see them, or they'd find out.