Had onsite interview 2 weeks ago

the hiring manager said she would let me know in a couple of weeks. But last week was thanksgiving, so i did not do follow-up with her. Today they should be back to work. Should I do follow-up email or just wait.

BTW, before my onsite interview, HR made a mistake to cancel my application. So I knew their HR system can automatically send cancellation email to candidates. I have not received any cancellation email after onsite interview, does this mean i still have a chance?

Hesitating all the past 2 weeks, wish hiring people could let candidates know the result as soon as they can. I got other interview opportunity, but would like to know this result before i move on.