The Eternal Price of Infinite Recharge by PhoenixianSirenanna (Archive Link)
Amazing mechanization story by PhoenixianSirenanna, which follows two female main characters and their lives after a brutal car accident. Both get the majority of their bodies replaced by cybernetic replacements, but due to problems with their insurance, they’re only of the lowest quality. This makes both of them look like common sex-bots and, especially one of the two friends, begins to no longer think of herself as human.
The story tells their lives over multiple decades, and it changes because of their now infinite lifespan. With our main character meeting her friend years later, finding her just as another sex-bot, questions start to arise within herself, as she tries to get her friend back.