AsNoriuanswered grow question 4 years ago I call it self top mutation. Had it 3 times, all girls recovered well, flowered better than average, during second week she should start to form leaves.
Know that first one i burned with spraying under powerfull light, why other two formed, i don't know. Keep her !
Check my diaries for full story.
Checkpoint grow 1 - bunny gorilla
Checkpoint grow 4. Tangie kush