Should i just go for it and ask her? I want a good idea of whether or not i should?

girls don't like guys who are shy like that and if you just go up and ask her i'm sure she will be touched that you care so much you never know she might like you back and since your already friends it will be that much easier and if she likes you she wont care if your shorter than her or if you are a little heavy she will love you for you not what you look like so go for it don't be shy because #1 girls don't like it when guys are to shy to come ask them yourself and #2 i don't think that you want to go through life wondering if she would have said yes and she probably will! girls love self confidence!!!