I had a couple chicks (10 weeks or older) get loose when they squeezed out of a place under the run . . . both times I found them hiding in dark covered places. The first one didn't go far - hiding behind some wooden panels I had propped against a wall in the barn. The second one had probably gotten chased by my free-range roosters and was hiding a little farther away - behind OTHER panels propped up outside the livestock paddock
. The second time I was clued in by the roosters, who were roosting as close as they could to the chick! I tried to lure her out with food but she was too scared. I left and kept watch out the window. As it started to get dark, she "roosted" on a roll of fencing close to her hiding spot and I caught her. Silkies usually "roost" on or near the ground.
Hope you catch your lovely girl!
And your daughter is learning from your distress. I bet she will try to be more careful next time.

Hope you catch your lovely girl!
