That sound Lucy makes to go to sleep

All babies seem to find a way to help themselves go to sleep. Joel used to suck his two middle fingers. Timmy had a pacifier for quite a while... as did Janina. Gabe would lay a finger against his eyelashes and feel them flutter. Milly would move her head back and forth and Mikelle moved her feet, Katie loved to feel the yarn fuzzies on a quilt. Ella would put a blanky up to her mouth and stick her tongue out against it, just like Lora did as a baby. Lucy does that same sort of thing, she is especially fond of fleece or fuzzy, fur-like blankets, but she has developed a sound that goes with it. I can't reproduce it, so I'll share a couple of short digital clips of her doing it. The second one was when she was working with her developmental therapist today. I need to capture this forever.