Marital Relationship (1)

Sometimes a quick exchange communicates more effectively, and more personally, than an article. Sometimes, just seeing that others share our questions can make us feel more connected. Our posted questions and answers are an opportunity to learn from each other. Keep in mind that each questioner’s situation may be unique, in ways that affect the halachah. Even the tone of a question can affect the tone of an answer.
Question
Is a woman obligated to take her husband's custom after getting married? Is it a traditional thing or an obligation? Should an ashkenazi woman who marries a sefaradi guy change her way to pray, her rabbis /poskim and all her family traditions to adap...