Yes you need to set boundaries if you can pin her down long enough and if she is awake.
In my case, and every case is different, when I spoke to my H who was using the place as a hotel, I told him that if he was living with me there were certain boundaries (which I spelled out). If he couldn't show me that consideration he would have to leave. His response was something about it being a bit drastic that he had to leave.
In the main he does not cross the boundaries. (BUT we are at a completetly different stage now.)
