I saw a post of someone saying that Ruby is blind. For some reason, that got on my nerves. I don’t know why but it did. From the screen caps, it seems pretty obvious to me that Ruby can see. Look at how she stops Steven before he touches the force field/prison wall. Then she glances at her own hand before she attempted it. It’s instinctive. A blind person wouldn’t have stopped Steven and they definitely wouldn’t bother to look at their hand before taking some kind of action.
The post said that Ruby couldn’t see and was listening for Sapphire to sing so she can “see” her. I thought when Ruby said she couldn’t see, it was because she was trying to concentrate and use Future Vision to look for Sapphire. And since it’s pretty obvious that Ruby is head strong and lack patience, she couldn’t concentrate over Steven’s talking.
As for Sapphire kissing Ruby, it could be another form of Future Vision but since I didn’t see Garnet’s Future Vision Kissing Sparkles, I like to believe it was out of compassion and love.
I can’t get over how much they just adore and love each other.