Hi Scott,
Heart openning things that will allow her to be fully present in her love for her just born baby will be helpful. Practically it is important, if possible, for her to have her baby skin to skin immediately after birth. The meditation, relaxation and conscious connecting with her baby antenataly will all be helpful.
Sorry that's not more specific as you requested, but I hope it is helpful.
Afron
P.S. The love helps the hormone oxytocin to flow well which helps the contraction of the uterus and expultion of the placenta.