If a someone want's something, they don't have it. I would say Hedda does not have the power.
No the american plague was in 1794 and black was 1346
use a dicitonary for the words
She is jealous that Lovborg befriended Thea
and is indeed jealous of Lovborg's talent over her boring husband's
She demonstrates a psychologically unfit apathy for bonding with people.
or is just plain mean