This has been done a lot, and probably a lot better than this. I wrote this in about half an hour, and it's probably not very good. I don't own Ugly Betty.
Daniel watches her through the glass.
She looks so happy. And the happiness makes her radiant, more so than usual.
Part of him wants to keep her here, just so when he comes in every morning he can see her smile and feel a little better about everything. He wonders, if in London they'll be some other guy who she'll offer smiles to every morning, he wonders if he'll know how lucky he is.
Part of him wants to keep her here, just so he can talk to her everyday, about anything and everything. He wonders, if in London, there'll be someone who she can talk to like him. He hopes so; he doesn't want her to be lonely. Not ever. Even if the person who makes sure she's never lonely isn't him.
But some things are just too bright and beautiful to be kept in a cage. He knows that. Now better than ever.