[@Phase Transit]Someone can correct me if I'm wrong but I don't think Amina should be able to tell that Saber is well Saber as he is right now not only due to his noble phantasm but due to the fact that he is not openly displaying any weapon. 

[quote]The only information visible on official materials are the master's name, height, weight, alignment, class abilities, and skills. His true name, sex, personal status, and Noble Phantasms are out of focus and unable to be clearly viewed.[/quote]