Generally the system members either 'view' the other's dreams, or share in them. Sometimes they have seperate ones but it's not that common.

More like? Depends, it varies. But on a whole, nah, Selene's become way less like her canon. Although she insists more like the person she really is and any perceptive person would apparently be able to see in the canon. Chloe hasn't changed, and I haven't been herr long so who knows.