I don't consider this a case of euthanasia either. Sadly I've seen genetic defects in our family. It's not an easy thing to live with for the person affected or the family who loves that person.
I think the right thing was done in this case and the mom will have to deal with her grief.
A mom can never truly deal with her grief when a child dies. It is a brave person that has a child in the first place because the possibility that the child is taken before the parent is too much to bear. God love her and stand by her as I know he will!
I'd give ger a kick in the head for good measure as well!!