Hi there. I did not have preeclampsia but did have pregnancy hypertension. I'm sorry you are going through this and I'm sure you are worried as all good mama's would be. Try not to worry. They will give you steroids if they think that is necessary to help with the baby and development but 35 weeks is getting close to full term. so, they will do what they need to for your safety and the babies.
I know I wasn't very helpful here but just wanted to reach out and wish you much luck and peace.