My girlfriend had an eye plastic surgery. I said, why didn't you tell me? She said she went because I didn't like her, so it's not bad not to ask me for surgery.
You may have accidentally said something that made her think you didn't like her. She wanted your approval, so she made a fine adjustment. She volunteered, and you obviously didn't have to let her do it, so she paid for it herself. You don't have to have any ideas. Encourage and praise her more when you get along with her in the future, which will help the better development of the relationship. If you don't understand anything, you can also communicate with our professional psychological counselor.