I don't think Gunjan was right to react like that. If she was uncomfortable about the relationship between Ranvi and Veera, she should have spoken to her husband in private and had a civilised discussion. However, considering the development of her character so far I don't think she is mature enough yet to do any civilised discussing. I think CVs are still developing her character like they are with the others. She has been out of her mother's influence (and in a more loving and supporting environment) for only a short time. I don't think it is realistic to expect her to change so quickly.
I like Gunjan character ... she is my second fav character in the show after my darling Ballu! I for one am still patiently waiting for her to change to the preleap Gunjan.