Hey Bryan... welcome to the forum but I'm sorry to hear about your wife's condition.
My advice for you, as a dad, is fairly simple. Make sure that you clearly understand from your doctor what to look out for, and get specifics (exact blood pressures, headaches, etc.). Then, find out exactly what to do if she exhibits any of these symptoms.
Additionally, while you're very well into the pregnancy (congratulations on making it to 33 weeks), please make sure that you and your wife are very comfortable with your wife's doctor. If he/she is NOT a perinatologist, then ask if he/she is consulting with one.
Remember, your primary role is acting as your wife's advocate during this time. Make sure that you really understand the disease that you're facing, when to seek immediate medical help, and, finally, that you and your wife are comfortable with your medical team.