Emotions are funny. I felt elated that she felt the desire to squirrel away a key, and at the same time I felt violated by her latest misdirection, and subsequent entry into MY house- the house that she KNOWS she is no longer a co-owner of. I had to both laugh and reflect seriously on the gravity of all this at the same time. A very strange feeling, to be sure.
Fairly normal to have these kind of emotions for a short time.
Don't let this throw you.
Observe the insanity, shake your head at it, laugh at it but don't let it roost in your noggin and spin your wheel.