LBH w/ a WW trying to save my M (2)

[gs9]

Ok... need some advice. I reclaimed the MBR probably about a month ago and WW hasn't really made a big deal about it or tried to take it back. She's been sleeping in the boys room which is right above the garage. We also have a basement bed and bath. I just received a txt msg from WW that says
"On days you don't have D4, I will be sleeping in my room. I'm tired of the garage door waking me up when you come home in the middle of the night."

My first thought is to just ignore it then when I come home and find her in the MBR to just climb in bed too. I would anticipate she would have all the kids in there too so I would have to wake up the boys and tell them to go to their room.
My second thought is to reply with "I am not the one leaving the M and I've made it clear where I'll be sleeping."

What does everyone think?