I think it was wrong that Savita Halappanaver was allowed to die when an abortion would have saved her life. I also think that discussing throwing facts at people all the time doesn't help change their minds or convince them that they are wrong when the issue is so bound up with emotions and what to some people are sacred beliefs.
I'm not sure what does. I used to be totally against abortion. Perhaps the one or two Catholic nuns at my school who thought abortion should be allowable after rape, because the horror of rape to them was far worse than the early ending of a forced pregnancy. My wonder at the time was about their willingness to talk about it. At any rate, I changed my mind so now my view is that although a woman's life does not 'trump' a baby's, the fact that she has memories, feelings, life complications already to live with and deal with does, on occasion, mean that what I will call her "life hold" is greater than a not fully formed baby's, in my view.