The Doctor appreciates the warning. Even with all he's seen and done, seeing a human like Eva in the middle of that is still shocking to the core: blood everywhere, her biting onto that snake like a wild animal, nothing like the Eva Salazar he's grown to know. His fingers tense against Eva's cheek as the worst of all comes - Sobek's invasion of Eva's mind, a glowing light like the sun burning into her (their) eyes, all the terrible things he'd done and gloried in searing into their mind's eye. All of that is colored with what's going through Eva's mind: another layer of impressions, feelings. Knowing that he knows.

He believes the Master would scoff at another ape showing her true colors.

Perhaps he'd even be impressed at just how many followers she'd injured and killed.

The Doctor lets time stretch between them, giving her a little glimpse into what he wants her to know about Right Now, and, after a pause, he lets her go deeper. A bit personal. Something to let her know that she is who she is. She's his friend; she's a survivor, and there's always a reason he trusts some humans and not others. They can't take back what she did and he doesn't think they should, at any rate. She did what she had to and here she is.

Here they all are.

The Doctor asks her to think of home. The simple things, really, the things she thinks are worth saving.

After a moment he pulls his hand back.