Responses
Because she has the common belief of all readers/reincarnated girls that only the heroine can “save” the mls, and if there is a possibility, it’s not becasue of the power of light, but by different means
Spoiler its explained in the novel but basically
Only a person that is the “priestess of light” or whatever can cure the curse and MC believed that to be Diana. The curse was cured in the novel through sex so she didnt think that feasible currently.
Why not at least try to cure him if she already knows there's a possibility she can?