• Why did you give her Darkvision and Truesight?
• Legendary Resistance isn't an action.
• Time Warp is built the wrong way - if it deals damage on a successful save, it should do so on a failed save.  A successful save should never be worse than a failed one.
  • You shouldn't resist psychic damage with a Constitution save.  Change the damage type to a Constitution-appropriate or change the save to Int or Wis.
• Prestidigitation does basically nothing, so you can drop it from her sheet for simplicity.
  • Same with Identify.
  • Detect Magic absolutely does work, but something will have gone deeply sideways if she needs to cast it normally.  If you want her to have this and Identify, let her cast them ritually from her spellbook (or from Rodney, if she has no book) to minimize statblock clutter.
  • Likewise, Clone should not actually be in her statblock - she won't be casting it in battle, it'll just make it harder to run her.  Its only relevance is that the PCs are unable to actually kill her, so she'll return and resume twirling her mustache. 

From a balance perspective, if she gets the drop on the party, they're likely done - Ravenous Void + Dark Star should be an unstoppable combo normally prevented by Concentration.

Aren’t darkvision and truesight different? One sees in the dark and the other sees illusions

edit: I read the abilities again and see my error. Thank you

Wow! That’s very detailed. I’m impressed.

Thank you! Anything you'd add?

I agree that psychic damage should be resisted with a WIS save, not a CON save.

I changed it to an Intelligence save.

Not meaning to go off topic what did you build this character with?

Foundry Vtt