January 11, 2012 05:00 PM



Lou Sulola Samuel, 2, takes a call — while holding tight to mom Heidi Klum — after ballet class in Brentwood, Calif. on Saturday.

Joining the pair was dad Seal and big sister Leni, 7½.

“She’s very quiet – she’s not loud at the dinner table. The other kids are very loud and she sits there and watches everyone,” the model, 38, tells PEOPLE.

“She’s sponging everything up, and I know she’s memorizing everything. It’s going to come out soon.”

RELATED: Spotted: Heidi Klum and Leni – Snowed In

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