I would say she needs a good feed. Probably why the pH is always the same. Nothing happening to change it.... I would give her half and half grow/bloom nutrients and see how she responds. Bring the pH down to 6.5. I hope this helps, good luck
You possibly lowered your grow nutes to early and she is suffering from not enough nitrogen now. Increase your grow nute a bit more for a week then try lowering it. Good luck.
Looks like the plant is a heavy feeder. I would be still feeding the veg nutrients for 1 more week and up the dose. Then transition to bloom after that.