It would be very funny if Pudding is Lola's nickname. I wonder what would Sanji's reaction be in the next chapter... Probably "NO! but... maybe yes... NO... but maybe she is hot.. .BUT!"
The reactions of Gray and Natsu is indeed interesting. Thing is, they may not know who the 12 are or at least not all of them. Gray sensing her magical presence may surprised him to meet one of them early... Natsu might be pulling off a Natsu. His reaction isn't one of fear, but more of omg can...
I wouldn't jump the gun that quickly. I think the reaction is more of, oh crap we didn't expect to find one of the 12 in this island so quickly and she looks strong. We mostly agree that the appearance of Brandish is pretty early and quick.
I think the next chapter will likely be focusing on...