Well, they would be lying of course. If there were not pre-existing "true moral guilt," whatever that means, your so-called "pressure" would make no difference.
I have counselled dozens of women traumatized by abortion and not one yet has mentioned ever feeling such hypothetical "pressure of pro-life groups."
We all know that, I am sure you have seen the video of the Rockford abortion clinic which shows the true nature of those who support abortion.
Actually, they are telling the truth, from their perspective.
They believe that if there were no reminders of how wrong abortion is, including religious reminders and especially in public policy (law),
then there would be no reminder of the guilt involved in killing your own baby.
This is the impetus behind, I’m conjecturing, 90% of all “pro-choice” women.