'It's good,' she said. 'Now why don't you come inside and do me?' And before I could answer, the panties she had been wearing dropped in my lap in a little whisper of nylon.
Afterward, lying in bed and eating oranges (a vice we later outgrew), I asked her: 'Good as in publishable?'
'Well,' she said, 'I don't know anything about the glamorous world of publishing, but I've been reading for pleasure all my life — Curious George was my first love, if you want to know — '
Question 1: In this case, afterward == after they made love?
Question 2: Good as in publishable? --- the preposition ‘in’ + the adjective ‘publishable?’ ( What’s the meaning of ‘as in?’ )