I just went and hunted down a reply I remembered giving to a woman in similar shoes. It says the same thing in a different - and clearer - way, so I'm reposting it here:
I always cringe when I read things like this.
Your OB probably *means* that your risk of having PE again is high, and wants to hammer home that there are no guarantees, and that you and your baby would be at substantial risk.
But an OB cannot tell you what you *should* do. An OB is an expert, and an authority, on what it is that is likely to happen to you in another pregnancy, and if you are a rational person (I assume you are! I'm just saying some people are nuts and wouldn't care about the OB's background here) you'll take that into account when you assess your values and your interests.
Whether or not you *should* have another baby is your call. Always. That's for the same reason a Jehovah's Witness can decline blood transfusions even if it means death to do so -- you give informed consent.
I'd talk to a MFM if you are wanting to think about more children, and see what the MFM says about odds and risk and management. Sometimes we traumatize OBs but the MFMs, who see this syndrome way, way more often, are not so scared of subsequent pregnancies.