Everything she mentioned is merely a formality. Take some time before responding. Don't respond right away. This is not some strategy to make her want you it is only to clear your head and respond calmly.
Any contact at this point is good contact.
She does not have ask how your interview went. She did not have to make any comment apart from the logistics.
She did.
In many ways you are beginning your DB path now. Don't spoil the oppurtunity with feelings of anger or despair. NOW is the time to focus and think clearly.