Years ago, when my son was 2, I would let him into the listening room to sit with me and listen to music, and he watched intently as I took the grills of my Merlin TSM speakers to listen (they sounded better grills off). I usually kept the door to that room closed, but M-F I would wait there in the morning for my carpool to arrive, since the room looked out on the street, and I sometimes forgot to lock the door.
One morning, as I sat in the early dawn hours awaiting my carpool, I noticed that my speaker grills were off and next to the Merlins. I was usually good about putting them back when finished with listening. As my eyes adjusted to the morning light, I could suddenly make out numerous dimples in the soft dome tweeter of the right speaker. The dimples were the size of a tiny person's index finger.
As I felt the rage starting to rise, my eyes instinctively turned to the left speaker. It too sported dimples, many more than the right side. At that point, a smile crossed my face as I realized the joy my young son must have had with the first speaker, such that he moved over to the second speaker.
I had to send those drivers back to Bobby @ Merlin (RIP) who laughed out loud when I explained the reason for the damage. They were replaced at low cost - because Bobby was a prince of a person.
Point being - if you value your stuff more than your relationships, time to readjust your priorities. You had a delightful female companion in your room who cared enough about your sharing your hobby to have an opinion and act on it. Sure, she could've asked, but I would take her interest as an invitation to share more about your hobby. Most gals would have been hard pressed to listen thoughtfully and with enough attention to get through a single song. Consider yourself lucky - women have better hearing than men across the frequency range, so she might have been doing you a favor.