Your sentence is wrong. It should read...
As Roblin and Adelaide were reading the reviews, Roblin thought that women may get the vote and their rights after all.
Or better still...
As Roblin and Adelaide read the reviews, Roblin thought that women may get the vote and their rights after all.
Your version implies that Roblin thinks it because both Roblin and Adelaide are reading the reviews. The beginning of the sentence As Roblin and Adelaide are reading the reviews... suggests that what follows is consequential, when, in fact, Roblin didn't think it because he and Adelaide were reading reviews.
You can make sense of it, but it flouts convention and abuses tense, making it confusing for the reader.
UPDATE: Please see the comments below. Readers should note that there's disagreement over the various answers given, amongst members with a good knowledge of the subject.