I don't get your point to be honest. Did your group wipe because Selene was in use and not Eos? And isn't it the scholar's decision which pet they summon? I made the experience that Selene is fully enough in most situations, even for big pulls, and Fey Wind is indeed amazing, so... why did you want her to use Eos instead?
Btw, the reply "...fey wind?" can also mean that this scholar wanted to say "are you really that stupid to ask me this?" It's quite hard to get the actual intention of a phrase if you don't have more than the written word.