You have time on your side. look at all the small things you listed in the post you just made. I counted at least 8 positive things you noticed your W doing in a matter of only a couple days. why are you losing hope so fast?
Thank your W for things she's been doing. let her know you appreciate and value her. she doesn't know if you don't tell her. also, work on you through all of this. be the man you need to be and the one she wants you to be.
you have NO REASON to think about giving up at this point imo. even if you are labeled as a "friend" right now, become her best friend. This doesn't happen overnight, but start becoming more interested in the things that interest her. not in a codependent way, but in a VERY friendly way.