I feel very sorry for this couple being in this situation and have no idea what I'd do myself, but these topics always make me sigh. IMO you're either basically pro-choice or anti-abortion.
If one is pro-choice then what gives one the right to judge someone on their reasons for abortion. Most people abort because they feel unable to cope with the impending child, whether due to disability, financial pressure, being alone, whatever. If you are pro-choice, why is this an opportunity to judge on abortion for one reasons but not another?
If you're anti-abortion (for any circumstance) it's a different matter of course.