Whether it was Cult or Indie there is no reason for Drago specifically to block Flower given she was healing him, and he'd otherwise risk some Hostile Indie ganking him. It's a zero sum play, we can move on.
drago blocked hime btw
flowa was simply redirected (thats the theory)
the sequence is
drago blocks hime - could be butler or invoker
flowa is redirected away from drago, possibly by sellsword who town read drago and wanted scum to kill him?
melkor protected drago
emi tracked drago and her action fail
none of the 4 is directly incriminated here. all can happen if we assume a third party sellsword messing with flowa