She doesn’t rewrite her entirely

When Terra awoke she found herself in a dungeon, with candles with purple flame and night black walls. She could feel that she was restrained with power blocking restraints making it impossible to use her powers. As she looked up she saw an old 'friend' mediating on thin air. She could tell she must have gotten herself an enhancement given her huge bust and sexual proportions and the raw sexual nature of her new costume, no longer a simple leotard and cloak.

“Raven he got you too? Please you have to fight it” she begged desperately.

“Fight?” she laughed “why would I fight my duty. It’s our destiny to serve Master. Mind, body and soul, it is a gift to be stripped away of our useless free will and devote ourselves to Master”

Terra could only squirm in horror as the former heroine began to caress her sexually. As if stroking a canvas of what to do with her. Before sighing orgasmically “but you don’t deserve that gift, yet Master must be served. So a compromise is in order”

She held her palm up to her head, small purple lightning started to prod her causing a pickle of pain. Before erupting in a maelstrom of anguish as her entire head fell in two. For a good five minutes she let out a scream before she could feel her mind be closed off from her body and a new one began to form.

“That seems appropriate wouldn’t you say... Tempterra?” asked Raven before frowning “going to need to work on that”

“Very much so Mistress” her body said against her will. Terra suddenly realised that she couldn’t control her own body, it appeared to have a mind of her own. Pure horror erupted within her as she thrashed desperately, imprisoned in her own mind.

“How’s Terra doing?” She asked causing her body (or Tempterra) to smile maliciously.

“She’s going quite mad Mistress but she has no power anymore. Eventually I think she’ll grow quite submissive” Tempterra said with a sultry grin.

“Oh I can think of many a wonderful thing Master would want to do with you. Hmm that’s getting you quite wet isn’t it” she whispered huskily a finger in Terra’s vagina. Tempterra was moaning softly and Terra herself was likewise being turned on; though she was enjoying the effects less so than Tempterra.