Small picture: A loss is a loss, no matter what the final score is. She played one match in Miami and she lost it. Since her comeback she played 4 matches that needed a 3rd set and she lost 3 of them, so I guess, yeah, if you're an optimist you can say that she's fit, if you're not, you can say that she's fit enough to finish 3 sets matches, but not fit enough to win them.
Big picture: Top 100? For sure, perhaps next year. Top 30? I strongly doubt it. (But I secretly wish to be wrong on the last prediction