Topic: Urgent advice needed

hello House, Pls I want your urgent advice. A friend of my did an interview with a particular multinational some 3 weeks ago and was told that they will get back to her on the next step of the recruitment process in 2 weeks time. However, the 2 weeks has passed. Pls, is it advisable for the friend to write to email the HR of the firm? pls, your advice are welcome

Joblers r on Xmas break i guess.