1 is flowering other1 making new leaves N.light auto

I wouldn't worry... autoflowers will only perform on THEIR schedule and that may vary between seeds. I'm thinking it may have been a little more stressed at the transplanting than her sister which will delay the start of flower - but I really don't think you have anything to worry about. Here's a great example - I have 4 Blackberry Moonrocks going... the 1st two seeds were planted and germinated about 2 weeks before seeds #3 & 4 who actually went into flower WAY before the first two seeds.... but they've all caught up now and there's pretty much no telling the difference between them except by the tags I've got on each.... Good luck - she'll be fine!