This is as it should be. It's too convenient for Yun Yun to simply say that the Yun Lan sect has also suffered greatly. They are the ones who willingly made a deal with the devil. That they suffered the consequences when the devil came to collect the interest is just natural. That was 100% of their own fault. It does nothing to make up for what the Yun Lan sect did in the meantime. So far the Yun Lan sect has done absolutely nothing to take responsibility for that, apart from the masterminds dying (Yun Shan and some of the elders). The Yun Lan sect as an entity, however, has done absolutely nothing. I don't really see what Yun Yun and Xiao Yan fighting would achieve though. It's just Yun Yun trying to avoid admitting responsibility.