Is Mona a good hydro applicator?

Could you elaborate on why you're asking if Mona is a good hydro applicator? Are you looking to optimize your team composition in a game that utilizes elemental reactions, or are you simply curious about her abilities? Mona is known for her ability to apply the Hydro element, but her overall effectiveness as a hydro applicator can depend on various factors such as her talent level, artifact set, and team composition. Understanding these aspects will help determine if Mona is a good fit for your needs.