Traveling back in time to ancient times, giving birth to a baby at the age of 16? That's impossible. The two countries were at war, and her husband ran away without her? If you don't take it, don't take it. Husband and wife are like birds in the same forest, and they fly separately when disaster strikes. Besides, she is just a concubine.
Purpose: Traveling through time is a pit, so you need to be careful when entering it.