The surrogate knew what she was getting in to, she actively offered to be a surrogate for her work mate having had her own kids
That still doesn't make it less sad or she isn't to expect some type of loss. Also, this could have been her first time being a surrogate for a couple. Sometimes, we don't always know how we would feel till we are in the situation.
Anyway, and I don't mean to be rude. But it just looked unnatural- the whole being taking away from your birth parent as soon as you give birth to them.