explain this part from mansfield park by jane austen?

Mitzy

New member
Starting, the lady instinctively moved a step or two, but recovering herself in a moment, affected to laugh, and asked him, in a tone not much louder, "if he would give her away?"

"I am afraid I should do it very awkwardly," was his reply, with a look of meaning.

what is going on?? its from volume 1, chapter 9
 
Top