In BB8 the audience didnt accept until about half way through the series that as well as being amusing and relentlessly positive that the twins were genuinely nice people. I think that stage is now being reached with Corin although she has the disadvantage of age and the advantage of being a bit more feisty and proactive. We also have John James who is in some ways a similar "journey" HM as Brian was so its an interesting contrast. Very different people but a similar contest.
It's only my opinion simper, but I think she comes across as a contrived character. It's like she wants to be endearing as the fick one, because it worked with Brian, and to some effect after the show with Jade.