Ooooo, I has found one...

Seems the "2" was behind the wine frig. And, given that information, my clever deduction is that Jessie was the "2" kidnapping culprit. The l'il frig is just below the playstand where Jess and Sterl sit in the evenings. No doubt she plucked my "2" away and sequestered it behind said frig knowing that I rarely clean there. My objective with said frig is usually more towards the front and inspecting/removing contents therein. Nevertheless, having noticed that the frig was doing little to keep my red at a comfy 54deg, I peeked behind to ascertain the ickiness of the filter screen and by gumski, there was my "2". Sitting pleasantly on the counter waiting to be discovered.

Ah, "2"... so nice to have you back.