Vol
Pᴇʀsᴇᴠᴇʀᴀɴᴄᴇ
No its ok, i can make it work its not exactly a big deal to me because Eiru is a 3-year guildmember and of her senses you've explained.Although i do need to make a point of the fact any info Eiru would have is very basic and would only be information deemed as important to a quest or team composition. She doesn't know a persons background info or personal information and she doesn't care for it either. (unless it's very important such as a noble and their political ties or a prior convicts crime charge although even then she really wouldn't care)
If it was a first year that realised WITHOUT such magical senses thats like "wow he's undead lol" then I would go "hmm.."
Tyron's reaction is pretty acceptable, he doesnt know hes undead but he has suspicions that zion is fucking weird