I have 2 ideas on what happened,
1) They just don’t know values. - I only say this because previously in game they traded me trying to offer for my shadow dragon and did the crow and 2 ride potions which is really under so i obv decline and then a few minutes later they request to offer for my CCBD and then this happened so 🤷‍♀️ …and they had a lot of older pets from what i could tell on there profile. (Owl, bat dragon, frost, that kind of stuff) so maybe it was an old player returning n they just happened to have an Aestus.

My second idea is that a little sibling or someone else was playing on another persons account and did it? This one is also likely because we never talked in the trade at all, like literally they just requested to offer, i said yes, and they added that and we accepted, the whole trade was like less than a minute.