You would have being induced because of your BP and to prevent it getting worse and you getting sick and the baby so I would say delivery was a must. Yes they can give you medication to bring the BP down but sometimes its not enough and if your liver function is already affected it is not going to improve from bringing your BP down. You can not perform a vacuume without being fully dilated unless they cervix is able to be stretched back past the baby's head. This can usually onlt be done when you are almost fully dilated. Like 9.5cm and the cervix needs to be stretchy which is usally isn't until you have had a vaginal birth before. With bubs heart rate going down you need to know if its recovering quickly and going back to a normal rate and only going down occassionally. Usually its a sign of distress and delivery needs to occur quickly. Sometimes they can do a PH on the baby (by taking a blood sample from its scalp) if its high or low they need to delivery it quickly as its a sign they are burning to much oxygen. Sometimes they do go down and back up down again etc but there PH is fine and then they are happy to continue with labour and not resort to a
c/s. As for her coming ear first unless she is very very tiny you can not deliver a baby coming ear first. The area of the scull that would be trying to come through the pelvis is to large for you to birth that way. Your labour would become obstucted and even with a forceps or vacuume they could not deliver her whilst she was coming that way. To my knowledge you can't turn them either at that stage of labour. I'd say she was firmly stuck which could have lead to her being distressed as she is trying to come through an area she was never going to fit.
It sounds like you have a terrible birth. If she was in a better position you might not have needed the
C/S as her position and the fact she was distressed was obviously the final decision for the
C/S not your BP. You are less likely to have high BP in future pregnancy's although you are at an increased risk theyn the general population seeing as its happened before. I know this doesn't help now but if/when you have more children you will probably have a much easier time and be able to have a VBAC if thats what you wish.