The TARDIS is confused. On the one hand, she can still feel her connection to the Doctor, still loud and strong. On the other, she's also aware of something being not right. She has no concrete reason to either believe or disbelieve Padme, only the feeling of sincerity and pleading behind her words.

And so she does what TARDISes shouldn't be able to do. She takes a leap of faith.

The door lock clicks.