Rowena is a very powerful witch and whilst she also no qualms about how she uses her magic (often to hurt people, or just for her own gain) to make rp fun there'll be limitations on how Rowena uses her magic. What Rowena will not do (without ooc consent) is any magic that would affect another character, particularly in terms of controlling or manipulating them. In a fight, she would freely attack someone, however she will not cast any of her spells that control someone (such as her attack dog spell) without an ooc conversation first. Larger scale magic will always come with a permission-ask first or will not be used in a thread.

General things that Rowena could do (and will be checked oocly!):

★ scrying (seeing through another character's eyes)
★ tracking spells
★ immobilise/trap someone
★ healing
★ telepathy (through astral projection)
★ self add more when you think of shit

tl;dr we're all here for fun and Rowena is powerful but ooc comforts and fun for all is more important than her just doing things. And her canon arc is a very slowburn redemption where she becomes less free (by choice) at harming and controlling people with her magic.