That Being Said; NEVER Be Afraid For Your Muse To Not Tolerate Her Behavior! It's Totally Alright & I Actually Want That To Happen - Tumblr Posts

I will definitely polish this further but here's the rough idea:

Cindy has extremely bad authority problems and dismissal.

This stems from her being the oldest sentient entity born and almost singlehandedly creating, reshaping although barely/rarely ruling the Universe. She is old. Beyond ancient. She has seen all types of governments, civilizations and planets flourish, fall and collapse. What's a god compared to a legend?

When it comes to rulers, humans or entities she doesn't bow, follow orders, speaks freely and at best she is polite but never overly so. She doesn't feel the weight of authority because no matter the situation she is always the true higher power, therefore sees no point in playing a part of hierarchy. However Cindy rarely names herself other than Eternal Fire or The Phoenix, she has to be truly angry to use titles to describe the extent of her authority.

It isn't fully arrogance, more like knowledge/being aware she is simply above. Despite born as human and originally only intended to be a Host for the oldest power she ended up merging with it completely and by now they cannot be told or ripped apart. Young, yet the oldest. Impulsive, passionate yet wisdom of millennias glisten in galaxy eyes.