I can't help but think that Rebekah must see Moriah as the coolest, most live doll she's ever seen. Rebekah who loves baby dolls now has a doll that cries, eats, sleeps, poops - for real!
She probably wonders why she's constantly reminded to be careful, soft, and quiet when we never said a thing before as she would scream her head off around HER dolls, hold them by the leg, or drop them down the stairs.