As a neat bonus, at higher levels, she becomes immune to one of her weaknesses, Ice damage, with the passive skill Null Ice.
At level 33, Mothman is more of a middle-game Persona, though can be acquired relatively early with certain fusion combinations.
Fuse Rakshasa and Yaksini to create Kin-Ki ā then Strength or level-up Kin-Ki to Lvl.
Fuse Hecatoncheires with Kushinada to get Horus, then fuse that Persona with Isis, Thoth, and Anubis to get Seth.
A party of three physical attackers and Joker casting these buffs can deal an insane amount of damage in the mid game.
As you might imagine it comes with some great physical attacking skills, of which Swift Strike is our favourite.