Not only that, but chances are she should be able to have a natural birth - since she's only at the midpoint of her pregnancy, there's a very good chance that the placenta will have moved by the time it comes to deliver the baby (only 10% of women in whom it's detected this early will still have it by their due date, according to this page (http://www.babycenter.com/refcap/pregnancy/pregcomplications/830.html)).

Obviously it's worrying, but I don't see how it's particularly ironic.