[quote=UnseenShade]
Indeed, but expect her to be a tad annoyed by the protectiveness. She won't be angry about it and might find it a little flattering, but she definitely will be worried it will inhibit her ability to blend or flank properly.
[/quote]

That is the point of distant Colossus. You never see him in action. He works were the dangers aren't apparent and a thanks never hoped for. You won't find him jumping before her character and brave an arrow aimed at her from where she can see. Because that is hers to dodge. He'll rather kill the one who would have gained from that advantage of focus. 

He won't come in your way nor would she notice him unless she looks for it. Believe me, I have played such a character before.