dialogue from playwriting class

A: Do you have a degree in directing?
B: No, English.
A: How did you ever learn how to do it?
B: (not sure she ever did) I just started, and made a lot of mistakes along the way. You kind of pick it up as you go along.
A: What’s the last thing you directed?
B: (realizing that this is also the first, and only thing, she ever directs) An adaptation of AGAMMEMNON.
A: I can’t imagine how you did that!
B: (me either, babe) You do it if you have to.