I am not sure if Gautami is going to be shown as a negative character. The best way to handle this will be to show us that Juhi and Tulsi are on this together...and will show us that Juhi and Tulsi had very good reason to do so....I don't think Juhi can know all the personal details without Tulsi's consent. They will have to make a very good case for both to do what they have done, w/o showing either one negative.
I agree with you