But what the people who created and then froze that embryo did, was child abandonment.
You got involved to save the child. You treated the child as a child. Lord love your good heart!.
But the genetic parents treated the child as a frozen kidsicle. Their choice was not noble. It was morally objectioable, because they intentionally exposed the child to risk, disposal, extinction.
I agree that third party reproduction comes with great moral responsibility. So do a lot of things where children are involved. But the family from whom we got her embryos I cannot say one negative thing about. They treated their left over embryos with the greatest possible respect as the potential human begins they are. (They are only potential because as we know many fertilized embryos are aneuploid and not going to become babies or even fetuses.) They made sure each one got a chance at life.
Thanks for your lovely compliments. It is a wonderful way to add to or start a family for infertile couples. It is adoption, in a way, but you also get to carry and nurse the baby, which for infertile woman is life changing and satisfying.