God mother drama

I have a situation and I need some advice.
I ask a friend of mine to be the God mother of our unborn child , but since I ask her she and my husband have fall out badly (they dislike each other deeply).
The situation is my husband say the don't want her to be the God mother to his child...... because of this there is big tension between him and I .
How do I tell her she cant be God mother anyone without hurting her feeling or making her upset?