After Ye Qingchan died, Si Hongye was indeed very angry. She had known about Ye Chanyi's situation a long time ago. A divine descendant who couldn't become a god was no match for Ye Qingchan in any way.
If it weren't for the high priest's hesitation, if it weren't for the fact that Yun Duo came to take Ye Chanyi away with the help of the Southern Dipper, and if it weren't for Pei Bai helping Yun Duo, Ye Chanyi wouldn't have had a chance to rise to prominence at all. If Ye Chanyi hadn't risen to prominence, she would have died the moment her bloodline was discovered to be problematic.
Therefore, Si Hongye had been holding back her anger. She believed that all of this was because of the high priest's weakness, the arrogance of Yun Duo, and Pei Bai siding with Yun Duo.
Therefore, after Jiang Buyi promised to give her a divine persona, she agreed without hesitation. If only Wang Han could be exchanged for a divine persona, why wouldn't she?