After marrying so young she was
overwhelmed by it all, having a child so quickly, and nursing, and warm-
ing up bottles of milk and testing their temperature against her wrist
while Raj was at work, dressed in sweaters and corduroy pants, teaching
his students about rocks and dinosaurs. Raj never looked cross or bar-
fled, or **plump as she had become** after the first baby

 A. as had she become 

 B. as she had become plump

 First, would you please show me if my rephrased phrases, that is., A and B, are interchangeable with the original one?

 Meanwhile, could you tell me what the word or conjunction ***as*** means here?


 Thanks in advanced