if your pre-eclampsia is quite serious they will induce u to prevent harm to you or the baby, my mums wasnt very serious but they still induced her 4 weeks early. its just best to keep a check on your blood pressure, and also that your not getting any headaches and very swollen ankles, but the midwfie said to me they usually will induce if its looking to become serious as they thought i might have it due to my mum having it! sorry im not much help but hope this gave u an idea xx