Birth defect should have no bearing on case or your opinion. Babies with defects entitled to same love and support and life as perfect babies.
Are you not presuming to tell the parents how to make a choice which was given by God to them?
Indeed, a case could be made you are attempting to second guess/influence the very will of God, assuming you believe God to have made a decision as to the health of the mother.
Is second guessing part of Christianity?
If so, may I ask for Biblical references, either Testrament would do.
Thanks.