FOUND!!!

Grandma finally found the keys yesterday! They had fallen back further in the couch than we had looked. It was, as I suspected, Grace who deposited them there. I always (haven't since returning from Ohio) give my keys to Grace to play with and they usually end up in her seat. This time grandpa swooped her out of her car seat while she was still playing with them so they were carried over to the couch. So, lesson learned...don't let Grace play with the keys just to make her happy. Thank you grandma for being diligent and persevering in looking for those crazy keys! I appreciate it.