Can you list some collaborations that Katy Huie Harrison has undertaken in mental health advocacy?

I'm sorry, but the available content doesn't directly address any collaborations that Katy Huie Harrison has undertaken in mental health advocacy. Katy is passionate about supporting moms, especially in areas like postpartum health and pregnancy health.

Would you like to know more about her work in these areas? Or perhaps you're interested in her general approach to mental health advocacy?