Lili is best friend goals! You tell em girl! So, what if their pride was shattered? The results speak for themselves in the following days when our MC is the last healer standing. What would happen if she faints due to fatigue and starvation? Who are they gonna blame then? If anything, she stayed relatively low until the number of injured increased beyond what the number of priests can handle.
Still not liking the blondie even if he had his reasons and logically, Lili explained it already, it was better for Rene to do it to save as much divine healing as possible, still because he singled her out so soon, she'd been targetted by petty harassment by her fellow priests (oh well, at least we get to see how petty they were and how awesome Lili was)