What collaborations has Hilary Erickson engaged in with Horizon Birthworks?

I'm sorry, but I don't have any specific information about collaborations between Hilary Erickson and Horizon Birthworks. Hilary is a sought-after voice in the content creation sphere and has worked with various brands, but I don't have details about a collaboration with Horizon Birthworks. If you have any other questions about Hilary's work or expertise, feel free to ask!