I think you should just have your say, spill your guts, respectfully, but spill them nonetheless. It's called communication and it's necessary even if she doesn't want to hear it, you have a right to say it.
In all honesty, the no alone time is a huge issue and symptomatic of other issues. It's almost dysfunctional when someone won't talk, can't talk about it and ignores it. That's actually TWO big issues instead of the core problem.
I salute you. At least you care. But put up some defenses so you don't get crapped on. People should only be allowed to hurt you so much.
If someone sends you messages they don't care, or feel the same and they won't talk or be honest, it's not a good sign. Just sayin' 4951