I think you can just let your bff know regarding the concern about her being the god mother. Tbh, I have colleagues and friends which are all having boys and spoilt my baby with a lot of things. I think that is fine because end of the day, they passed me the items and I made the choice whether to give to my child or not. For clothes, I will just let her wear. But for toys, I made it very clear to my friends. Hence, they brought me along to choose the toys for my girl, or otherwise passed me the cash to buy things for my girl. I prefer realistic items such as diapers and all. Even for clothes, I told my friends specifically the sizes to buy.
They do understand where I am coming from as I also do not want them to spend money which will be wasted (like buying clothes too small for my girl).
Anonymous