Im pretty sure her power is able to know if danger is near based on the pea mark burns (the more danger she is in, the hotter the pea mark would get) she would get at the beginning of the chapters, plus her immense strength in the manwha.
She has like one of the worst powers but like she did survive with it I kinda hope that her power can do something more tho ╥﹏╥
If you think about it, it's a sort of spider-sense. It would help a lot when dealing with assassination plots and the like but her power is more defensive.
Helene just has poison resistance which I think is way worse and little mermaid is just one week of infatuation. So far, it looked like frog prince power was the strongest but she squandered that.
Wtf why doesnt the pea princess have any power