Some people get depressed, that is true. Drastic hormonal changes can cause very serious depression, not entirely unlike postpartum depression - which can be horrible.
There are also people who go right on with their lives. I know several like that, and none that I would describe as ailing from "hardness of heart" or "denial". They are typically women who later marry, look back on the experience with mixed feelings, but don't give it much thought. The ones I am thinking of seem perfectly happy. (And, I might add, two that I know are born-again Christians; another is Catholic, and another is a Jehovah's Witness. I would assume at least a couple of them have sought God's forgiveness and felt that they received it.)
I think the cold, hard reality of it is that many women who have abortions have one thing on their mind: not being pregnant anymore. That's all they want. They are desperate, and they will take their chances with what happens later.
Some have a difficult time afterwards, but really, a lot of them don't.