Synthetic Nora can be located in the Diamond City Market. So even if the game player encounters Nora as the real Nora, the Synth Nora would still require proff that she is a Synth and be required to travel to Vault 111 and complete her Companion quest known as 'Cold Comfort'.
The character gets added regardless if the game player has selected the Male (Nate) or Female (Nora). Synthetic Love is a Fallout 4 companion mod that adds a synthetic human character named Nora to the game.
