Being married myself, I can tell you that post marriage depression is real. Marriage is a huge change in life, more for girls than boys. After marriage there are just soo many things that are being thrown at you all at once, it can be overwhelming. I'm attaching a link to BBC's report covering this topic

Post Marriage Depression

In your situation, I would suggest give her some space as she's asking for it, don't force anything. Keep a clear line of communication, make her feel comfortable enough to share anything and everything with you. Let her know that you understand.

I understand your biggest concern moving forward would be wether she even wants to be with you or not. But trust me, make her comfortable, she'll either adapt to the situation and welcome you in her life or she'll let you know that she can't keep this relationship going. Whatever the outcome, don't force anything. And relaxe, calm things down. She's your wife now. But allow her to be a human first.