So is Sekhmet evil or Barothy?

Okay so, mythologically while Sekhmet could be violent and brutal, she didn't seem particulalry devoted to pointless cruelty like punishing servants and devotees etc.

But Barothy, she was clearly just a sexy sadistic bitch.

So when Drolta went to Barothy to give her Sekhmet's power/avatar status blah blah, was it because Sekhmet wanted that or is that, or because Drolta was just twisted from everything that happened to her?

Was the root of cruelty Sekhmet or Barothy?