I can understand the mcs position. Dealing with another persons problem while having difficulties in your own problems is too much to handle. She's just tryna survive here, not to be a fairy godmother of some sort.
The ending... I dont think all endings need to be completely happy and perfect.
,But just in case, the webtoon/manhwa can differ from the novel ╮(￣▽￣)╭
Where was the smut. This was only ecchi for 3 scenes. #－.－)