Will she ever consider a bestfriend?

Sounds like your doing everything right so far if she feels something for a guy that doesn't feel the same way about her then don't worry she'll be over him soon. I've been in a very similar situation before just keep doin what your doin for now. If things don't work out soon don't sweat it dude it may take her a while just show her your there for her and that you care. Good luck bro!