Sorry to hear about how hectic December was for you!
Keep that tree up as long as you wish! You don't owe anyone an explanation as to why it's still up. If it makes you happy, go for it! I just took down my tree but still have more decor up. It will come down when I feel like it.
Continue to visit us here daily for your Christmas fix. We celebrate all year!!! We are happy to have you with us. =)