C1457 Origin
That was because she knew that Yi Hao didn't know what he wanted to know, and didn't get the truth that he wanted to know.
When she saw her husband, she definitely wanted him to stay by her side, but the Icemountain didn't want her to be the stumbling block to Yi Hao, so she had to let him go on his own.
But to go through the pain of separation, the pain of lovesickness