That applies mostly to outdoor plants where it is possible that rain might swamp the plant on an ongoing basis leading to root rot. In fact, some people do plant a little deeper with each re-potting. I have not done this so I can't really comment. Similarly, when root pruning mothers it is recommended. So I think you did the right thing. She will not be happy to be sure but keep her hydrated and put a humidity dome over top if she is not too big.