In fact there is at least some evidence: (e.g. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0128832 https://journals.plos.org/plosone/artic

In fact there is at least some evidence: (e.g. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0128832 https://journals.plos.org/plosone/article?id=10.1371/journal...) that for the majority of women having an abortion does not even lead to regret, let alone anything as strong as PTSD. However, you always have to be careful with statistical measures like this, it's certain to have been a traumatic experience for some fraction of women experiencing it, no matter how small. For people in that position hearing 'oh, it's no big deal' must be pretty hard.