The fact that Dove would be able to manipulate anything with 'Light', as well as earthly and divine elements, implies she would be able to do nearly anything if she wanted to. Just the element of not knowing how, while interesting to play out, is not an adequate limitation -- events in the game can mess with the use of powers and put them outside the characters' control, as has happened in the past. These events have been tailored towards forcing characters to live with the personal consequences of destruction or murder, but if it becomes difficult to justify a character not destroying most of Keeliai all by themselves, it's not fair to the other players whose characters may become overshadowed.

Additionally, 'Light' wasn't defined in Dove's app, and there is only a vague description of what 'Light' and earthly/divine elements might mean in your request. While we want to give players room to play around with learning new powers, especially through canon updates, we as mods also need to understand what characters can potentially do; an open-ended explanation such as this isn't fair to other players, as it means there aren't any definable guidelines for how other characters might be able to interact with Dove in terms of power scales.