In your case, I think it was unavoidable. You probably didn't have much choice about the induction due to the PE because women with PE can get very sick very quickly and if that happens it can be disastrous for the baby and often there isn't time to allow medication to work etc. But that is the catch 22 - you needed the induction but then that alone also started you on the cascade of intervention path. I think that you just didn't have enough time in labour to allow her to get into the best position she could, especially an induced one where your uterus is contracting harder than it would have in a 'normal' labour. Sometimes induced births can be harder physically on a baby, and that's why her HB was dropping, so it's not necessarily that she is in distress, but that the contractions are hard on her kwim? Not only that, her head wasn't in the right position and no amount of instruments were going to get her head in the right position without a huge amount of discomfort and distress to you, not to mention the possible physical injury to her by trying to do so, so it would have been the best outcome for her to go to a
c/s to get her out, especially if you think that she did have some residual issues from the way her head was.