Nerfs from Velvet's previous stay in the game will still apply. With regards to her arm, it will largely work the way it does in canon, we would like to add a cooldown on how often it is used. Depending on what kind of individual is absorbed, there will be a cooldown period until she's able to absorb anything with her arm again (i.e. a few minutes to an hour for simple monsters, and a good number of hours to a day for more complex monsters). In addition to this, you can either nix her need for malevolence as food or allow her to passively absorb it around her while in the game, if you wish. Regular food will likely still remain tasteless to her, however.