User blog comment:FairyRaven/Fairy Tail Chapter 427: Pitched Underground Battle, Review and Commentary/@comment-31.132.65.54-20150408015850/@comment-177.225.237.75-20150411053201

Devil Slayer was similiar to Ice Shell, that could only be melted with Moon drops, Ultear, even with her Time Magic, wasn't able to melt it, so she couldn't have melted Silver's ice in the Sun Village.