Ok so it was established fairly early on that this thing was growing out of her body right. So all these tentacles and what not are actually connected to her and sprouting through her skin and tissue and not just draped over her the way the FX were.
So when they inject the creature with the retrovirus the tentacles all die and the pathogen in her system is removed but what about the damage already done to her body?
Even if we go ahead and assume that the tentacles that are inside her and growing out through her skin just dissolve shouldn't that then leave her with skin that looks more like Freddy Kruger's than what we saw in the episode. There would be holes and scars and gashes everywhere a tentacle had displaced or replaced her normal human tissue. Either that or they don't dissolve and we end up with them having to just shave them down as much as possible to avoid ripping dozens of holes in her skin and now we've got Dr. Treestump.
In either case, short of some sort of elaborate nano tech removal and regeneration efforts or some as of yet undisclosed ability to regenerate skin like a Wraith she should not have come out of this in anything approaching pristine condition, even if she did live.
So did I miss something or is this just a typical no lasting consequences reset button.