Robin watched the Doctor tinkering with the controls for a moment, his deft hands flipping switched and turning knobs and pressing buttons seemingly at random. She contemplated what he was saying. Anywhere, any time she wished to go... A wide grin once again appeared on her face as thousands of scenarios raced through her head.<br/><br/>Then the smile faded. What was she thinking? She had a life, and friends, and school... Family... She couldn't just go running off with some mad alien when she had a completely normal life to get back to. Everyone would be worried, and she would ruin her entire career at the University of Florida - something she had striven for since grade school.<br/><br/>"Thank you for the offer, Doctor," she said, her voice stiff and a little sad, though she hid it well. "It was an honor meeting you and your TARDIS, she really is lovely. But I have a lot to do here. People to take care of, an education to get... How am I supposed to just leave it all behind?" She turned her eyes away from him, hoping he wouldn't see her sadness. "People have gone with you before and sometimes... They don't come back. And eventually you have to leave them. And I don't know if I can handle that."