At what time does she wake up?
Ann wakes up early for school like the other students. On the weekends she might sleep in, but the exhaustion of phantom thief activities might lead to her sleeping early. On the other hand, maybe the stress of the things she goes through could also keep her up at night.
How long does she stay in bed?
She doesn't seem like the type to stay in bed unless she has someone to spend the time with. Or maybe she might play games or use her phone in bed.
Does she have a specific breakfast?
Ann lives with a caretaker who likely prepares meals for her, though she knows how to cook too. Because of that, she probably has a good breakfast every day of whatever she could choose: anything from steak and eggs to french toast to yogurt and fruit. I think she could even enjoy something like a sugary cereal. Ann enjoys all kinds of food. If she got serious about dieting it would be something nutritious and low fat.
Does she do a specific activity?
I don't think she needs to put too much effort into her appearance to remain beautiful. I'd guess she bathes at night to relax and for the convenience of not having to rush it in the morning. She has an effortless beauty and sense of style that let her get out the door quickly.
Ideal morning
Waking up in bed at the same time as me, only vacating it when we're ready to start the day. Maybe she might enjoy some breakfast in bed if she's lucky. Afterward, she would style herself however she liked and plan how we might spend the day together.