Is she dying? / Is she flowering?

Answering question 2 is quicker so Yes she is just starting to show pre flowers.. About 1: no She is not dying at all. Loosing a chunk of roots in transplant is not ideal but she will live =) ..however this can explain the slight wilt on new growth... About leaves going yellow: new leaves showing up yellow is normal just give some times for nutes and mineral like iron to reach new grow. But lower leaves turning yellow is a little more concerning. Looking at your diary's data, you might be underfeeding... I don't know about Intense nutrients.. Big question is What is your base soil ? if you used something like store bought living soil, Fox Farm or Canna soil, those should contains enough N for a few more weeks, gradually introducing flower nutrients as your plants will need P and K. Your only food is 2ml per liter of Grow, plus the Foudation. I suggest you try a little more grow and start with bloom at next watering.