You make some valid points. On the other hand, who knows? The writers are inventing the universe, so there may be rules we’re not aware of yet. Maybe some dolls were created with a different process than others, and have different types of vulnerability. Maybe Adelle is not a doll per se, but has had her life manipulated in some other, parallel way. The deeper question is, what will the complete metaphor of being a doll turn out to be in the long term? Whatever it is, it’s likely (as these things so often are carefully crafted fiction) that all or most of the characters will be bound by the same metaphor, whether or not they are its most direct manifestation.

Non-Dolls basically got stoned immediately. Dolls didn’t react for a while, then began “glitching” (reacting to hidden memories surfacing, usually traumatic ones). Importantly, NO ONE we saw in the episode knew the Dolls had a different, delayed reaction to the drug until after everyone had come into contact with it, so no one was in a position to “fake” a reaction for the sake of fooling someone–and both reactions were pretty debilitating, in the midst of a crisis situation, so “faking” a reaction would have been borderline suicidal under the circumstances.

EVERY member of the Dollhouse staff we saw in the episode got high (i.e., the NON-DOLL reaction). This includes Adelle, Topher, Boyd, and Dominic (whose reaction is now irrelevant after last week’s episode). The only regular/recurring staffers who didn’t appear in the episode (that I recall) were Ivy and Dr. Saunders, so we do not officially know whether or not they are Dolls.

However, as per the writers, Adelle DeWitt was categorically NOT a Doll as of Episode 7. I find it difficult to believe (given we just saw a wipe process performed in Episode 9, and it was excruciating and difficult to do to someone who understood what was happening and hadn’t consented) that there has been any opportunity since Episode 7 for Adelle to have been turned into a Doll when the cameras weren’t looking.