That sure > [So that surely] ween > think, believe

8 Would hardly find to aggravate her grief;

find > contrive grief > suffering, pain

9 For misery craves rather mercy than reproof.

reproof > reproof, scorn; shame, disgrace

308.2

But that accursed Hag, her hostesse late,
2 Had so enranckled her malitious hart,
That she desyrd th'abridgement of her fate,
4 Or long enlargement of her painefull smart.
Now when the Beast, which by her wicked art
6 Late forth she sent, she backe returning spyde,
Tyde with her +broken+ girdle, it a part
8 Of her rich spoyles, whom he had earst destroyd,
She weend, and wondrous gladnesse to her hart applyde.

7 broken > golden 1590

1 But that accursed hag, her hostess late,

hostess late > [erstwhile hostess]