Wow, I didn't even know the bee-wife symbolism. The only thing I would add is the lemon-honey is a sour-sweet (or bitter sweet, rather), combination, so the memories are these "bitter" but also "sweet" things ( thus the out-of-place bee, on top of it marking the good wife.)
@ShadowWalker because it has honey in the sandwich ,so it has sweet and tingly feeling to it, this is just a guess but if people said honey i would think of a bee
I walk down the street, I go to the store I get out of the store. I saw an old lady trying to cross the street, I got close to help her and there on her shoulder... a bee