As of today, Gabby is no longer wrapped!
Yesterday when I put her down for one of her naps, she managed to get one arm out so I left it. She was asleep within 2 minutes so that indicated to me that, perhaps, she was ready to sleep unwrapped all the time and not just at night. So, this morning, I put her to bed without wrapping her (just put a blanket over the top of her and tucked it in) and she slept for 2 hours without any hassle. Yay!
It seems the "slow and steady" approach with Gabby really works. Just a little at a time until she gets used to it.
It will be good not to have to worry about bringing a blanket or a sheet with me wherever I go!