Hello Friend, Good that you are seeking a help here. Any relationship will be strong and long Last only when there is trust, open communication and give and take.  Ego is a symptoms of understanding gap. Looks like you still need to understand each other better.Discuss your expectations and concerns directly with her. Suggest you to take pre marital assessment and counseling support.

Hi, seems like a borderline personality picture. please discuss in detail. consult with me or any psychologist for therapy & counseling. In the mean time: Change your perspective. You do not need to constantly engage with this person. ... Maintain your sense of confidence. ... Avoid feeding their ego with compliments and validation.