While Mary gave birth to and mothered the incarnate Christ, she contributed nothing to His Divine nature, and owes her own existence to Christ. Giving her the formal title Mother of God disrespects how the Holy Spirit describes and gives titles to created beings, which works against exalting them as RCs extremely do with Mary, thinking of her "above that which is written," which the Spirit warns against. (1Co. 4:6)
How did you manage to say that so well?
How does God manage to use me much at all is the real question!