Outside the window, Arya was hanging while holding onto the upstairs window with one hand, her expression was very calm.
She knew that the safest method would be to plant a bug.
But with these two people's alertness, would they not know if she had a bug planted or not? They would never forget to check everywhere in case there was a bug around that she had planted.
So the best method was to listen in directly.
Her physical strength was not bad and she purposely not expose it so that the organization would not give her any mission that she didn't want to do. Even now, being the 'logistic' in the team was already pretty good.
'If you give me too much trust, you're the one who will get hurt, Mr. Miro,' Arya thought to herself.
She noticed their gazes and guessed that they planned to talk with each other, so she tried her luck.
Who would have thought that they were discussing about Miro's plan.