Finances While Separated

So my wife and I are separating and she is moving out.

Since she is going to be paying rent, what have others done with respect to the bills?

I pay the mortgage, Insurance, and the vehicles and she pays the utilities.

Should we continue the same while separated or can she say that she will not pay for utilities since she doesn't live there anymore?

If she does this I would point out that I pay for her cell phone healthcare and auto insurance among other things

Looking for advice as to how to split up the bills.