I love this so much, i really wished she had just give us a sampling of her violin skills, but it's amazing when she just goes, 'it's not happening, but i like your style.' They all seem like genuine friends with a common interest and amazing skills, and V appears really relaxed and happy.
I think with the water, she was drinking P Spring for NF, as i have a poster when she is doing the peace sign in a break in shooting, and that bottle is always somewhere near her on the picture, and on some live shows i've seen on YT, i think you can tell by the tiny little bottle.