[My real body is this universe itself, I only take upon a humanoid form to make conversing with my 'Master's' easier.]
Hearing her reply, Arthur couldn't help but think of how convenient that was. He then shifted his thoughts to the matter at hand.
"If that person she came with was the one to tell her I was a progenitor, then how did that person know in the first place?"
[You should already know the answer to that. Think back to the being that you encountered before the start of the Nemo Planet auction.]
'The being I encountered?'
Arthur thought back to all the beings he met that day and it did not take him long to find the answer.
"Ha! I see, so whoever this watcher woman is, she is also a progenitor!
Since progenitors can recognize each other with just a single glance, she was able to do the same to me and she told Alexia."
Your gift is the motivation for my creation. Give me more motivation!
Creation is hard, cheer me up!