On the other hand, if she has adequate resources, depression can largely be addressed. Modern medicine has understood for example, that paxil does NOT go through the mammaries, so is safe for breastfeeding (not comfortable with that, but then again, I'm not in that situation).
Also proper nutirition and support structure can largely remove the stress that exacerbates pre-natal and post-partum depression.
With her wealth, she would likely be able to "tough it out" by throwing a bit of her money at some of the likely problems. She would likely have a doula, midwife and doctor, not to mention a night-nurse, etc.