This is an interesting piece. I have a few comments to make.
First, I think the subject matter is a little too broad, and it's difficult to understand the significance of the story. You and Maud like sharing stories, her husband must not mind, and it turns out you're a ghost. I like the minor references to the "twist" at the end (like how you'd 'be beneath an earthen slab,' but you're the living dead, so you're not), but I feel like you don't give enough of an impression of what your relationship was actually like. What kind of stories did she tell you, why, etc? You spend a lot of time describing the routine, but too little of what happens.
Also, I think your language is inconsistent at times. I find it hard to believe that the same person says "life ain't what it seems" and "in her abode" and "earthen slab." Maybe the rhyme scheme ended up giving you a little trouble? It can be tough, I'll admit, to get away from poetic language when you're using form like this, but I think it's more important for you to try and keep a consistent spoken tone, one way or the other (maybe doing away with the colloquialisms and writing in fully poetic language).
Sorry if some of this is a bit harsh. Just felt like this merited a response.
"To me, the thing that art does for life is to clean it, to strip it to form."