It sounds like you feel that Tammi is not communicating clearly with you and is being unsupportive of your perspective. It's important for effective communication that both parties take responsibility for their own communication styles and work to understand each other's perspectives. It may be helpful for you to have a calm, honest conversation with Tammi about how you feel and the importance of clear communication in your relationship. Additionally, it's important to remember that it's okay to ask for clarification or more information when you're unsure about something, and it's not fair for someone to belittle or shame you for doing so.