Beloved sweetheart bastard. (1)
This phrase, which begins the poem, just might be a symptom of Miss Havisham's madness. Can someone be both a sweetheart and a bastard at the same time? She could be purposefully using an oxymoron to present contradictory ideas. (She both loves and hates her ex-fiancé.) Or maybe she's a little nuts, and the contradiction flies completely over her head.
Spinster. I stink and remember. (5)
Here Miss Havisham is certainly aware of herself. She knows she's a spinster. She even acknowledges the fact that she stinks. So maybe she's not so crazy? She seems pretty aware of herself and the situation she's in.
[…]Whole daysin bed cawing Nooooo at the wall; […]
Lying in bed all day screaming at the wall doesn't exactly sound like good mental health behavior to us. Then again, who hasn't been temporarily destroyed by the breakup of a relationship at some point in their lives? Shmoop recommends ice cream.