Cathyl is a very hard worker as she was concerned about being behind schedule after treating Kimihito's injuries. She can be quite emotional as she was noticeably sad and angry at her lover for supposedly cheating on her.

Due to this, she can be aggressive as she later apologized for kicking and choking her host. She also threatened Kimihito with violence should he take advantage of her while milking her, to the point of nearly crushing his skull. This temper is especially noticeable as Cathyl is a "Milk Minotaur", who is usually known to be calm and reserved.

Despite her aggression, she is quite friendly when she is calm as she apologized for the accident with the logs and even treated the wounds. She even offered fresh vegetables as thanks for Kimihito's and Centoreas' work.

Cathyl is quite prideful, as she refused to ask Merino to milk her despite the fact that it urgently needed to be done, as it would be too embarrassing for her.

A noticeable trait of hers is her inability to remember names. This had tragic consequences, as due to it she believed her host was having an affair with multiple women due to the fact that she forgot the female names her host kept mentioning were those of his livestock.

She has a habit of munching on a piece of straw.

Monster Musume wiki 

Voice reference: https://youtu.be/MwDmrVP_qeY