Adrian is her biological son. Even though Watt is wearing a mask now, it's impossible for a mother not to have any sense when her own son is standing in front of her.
If he is Adrian, that would explain why he appeared here so early.
He might have been here all night last night, for all we know.
Diana actually had suspected before that Watt might be Adrian, but when she claimed Adrian's body, she personally went in to identify it. The airline involved also conducted a genetic test, confirming that the person she initially saw was indeed Adrian.
Her eyes might have been mistaken, but the genetic test couldn't be wrong, right?
Even if Diana thought Watt might be Adrian, the genetic evidence is there, and she had no choice but to accept it.
Diana just stared blankly at Watt, her mind in a bit of a turmoil.
Does she miss Adrian too much? Is that why when she sees a young man with a similar height, she immediately assumes it's Adrian?
