This is a little strange. In my experience, I've only known two women who were ok with me touching their boobs but wouldn't let me see them; one had had surgery so it made sense, the other was painfully shy, but at the same time she kept stuffing my hand down the front of her pants working her over manually, so it was a fair trade I guess.
By contrast, the vast majority of women I've interacted with were of the "look but don't touch" variety, whether it was low-key flirting & playing around like that, or they just straight up flashed me. To some extent, whether it was just a flash, going topless or posing for photos, they had no problems letting me see, but I wasn't allowed to touch them at all. That's ok, memory is a thing. So your experiences of being able to touch her boobs long before getting to see them is a little out of the ordinary.
As I was reading, when I got to the part where you were asking for suggestions how to finally see your friend, I was going to tell you how I got my current gf (who is 5', 95lb soaking wet & fully clothed and has the expected gorgeous A cups that I love so much) to show me the first time. Now I see that's not necessary. But one aspect of how my gf & I got started I
would like to mention. Since you've felt them up, gotten plenty of good peeks and even got her to give you a "shirt lift, full-on", if you think she'd be receptive, why not suggest to her that you get some pictures of her? Either the downblouses or a shot of her lifting her shirt up for you, facing you? Think about it: it would give you something to take with you after your fun, as well as giving you something you could share with the rest of us.
And going by the title of this thread, I'd hazard a guess that everyone who's read this not only likes small boobs too but would love to take a gander at what you've been describing this whole time
