You really think so? She's only 4 months old, though. Maybe she's just copping an attitude. :/ Time will tell I suppose. Right now my biggest concern is getting enough calcium in her, she's decided that grit is horrifying. We've been sneaking egg shells into her food but I don't know if it's enough.
If you're still feeding Mazuri Maintenance, I wouldn't recommend giving her supplemental calcium. That can cause tons of problems if they're building up calcium their bodies can't use.
As far as the grit goes, I give my Calls chick grit at first, but she's old enough now to have regular grit. I'm kind of worried about her avoiding grit since she doesn't get to forage every day.
I don't have any ideas about her hiding in the laundry, but I've never had a house duck. Maybe she's just bored and looking for something new to do?