Well, I'll credit her with not being a hypocrite. She was stuck in her own way of thinking, but as soon as Luxia pointed out the contradiction with her as the exception, she was open to changing her views.
Now that her views have shifted, what's next is her Taoist organization's shady side, I suppose?
That said, if it were me, I definitely wouldn't go so far as to power up an evil spirit. All she had to do was check with his poor mother. The living wouldn't lie for the dead if all spirits were malicious.