Quote Originally Posted by David75
Feeders feed on awakened
The tower is an awakened, isn't it.
If the doublet Beth/Alicia is infected, once under control they will of course attack feeders to protect their puppet master.
If Beth is taken over, I believe she'd relinquish control over Alicia rather than becoming the medium throught which the parasite can control her sister. The whole thing about them having to be twins is that their mindset and bodies are similar, so that a link can be maintained. Beth's mind has to be focused to keep Alicia in control, so the link isn't ON by default. Being taken over by a parasite would kill that link, as it kills Beth's mind, and I doubt the parasite would be able to re-establish it.