Am I being unfair here?

About 6 years ago I bought a new house so that I could live with my girlfriend and her kids. I sold my old house and used all my own funds to put up about 60% down payment. Initially I made more money than her so I paid for pretty much everything. She also had trust issues so she wanted to save money in case I left her and I was fine with that. We got engaged but never married. 1.5 years ago she broke up with me and I didn't see it coming. We've continued to live together all this time. I was hoping we could try again but she never wanted to. I told her I can't keep doing this so we're going to stop living together. All the time I continued to pay the mortgage and utilities. She paid for most groceries and did all the cooking. We split most other chores evenly. She thinks I should give her 50% of the house value and I think I should get significantly more because I put continued to pay the mortgage. I was willing to give her half of the house appreciation since the value has gone up quite a bit since we bought. She is also going to keep the vehicle we bought together. In my mind that, plus the fact she could save money instead of putting it in the house offset the equity earned those years we were together. Am I being the jerk here? She's no longer talking to me.