I adore this blog post written by my dear doula colleague, Yiska Obadia. You can read an excerpt below, and the full article here.
"Doulas are there to serve their clients. You want to birth naturally? I will support you. You want an epidural? I will support you. You want an epidural and to avoid a c-section? I will do my best to help you achieve that. Doulas serve our clients in helping them to achieve the birth THEY want as well as supporting them wholeheartedly with the birth they get."