None of my business right?

I’m staying in a hotel, have been for about a month due to my husbands work and he wanted us to come with him to spend time together. It’s an extended stay so there are a lot of people here that actually live here. Right above us is a mom and a young teenager, I believe her mom said she’s 12-13. For about a week straight, I was constantly calling the front desk at 12am, 3am and 6am due to stomping. It got to the point that we actually were about to switch rooms. I was at the front desk seeing what rooms were available for us to switch and the mom happened to come down. She said she has no idea why there’s stomping, she works midnights so her daughter is alone all night. She said her daughter sleeps like a rock, so she shouldn’t be up at those times. (It was consistently the same times for a week, 12am, 3am, 6am) turns out, she gets home at 6am so that was her. But the other two weren’t.

For the next few nights it stopped. Now it’s been another week that it has started up again. For the past 3 nights ive been in the bathroom getting ready for bed at midnight and every night at the same exact time, when I’m in the bathroom I can hear someone knocking on their door, then followed you what sounds like heavy footsteps. At 3am exactly I hear the same loud footsteps followed by their door slamming shut. (The hotel we are at has VERY thin walls)

The mom seemed very persistent that her daughter wasn’t the one making noise as she’s so little and doesn’t stomp and that she’s alone all night. Again, this girl is like 12-13.

The mom in me feels like I should just bring it up to the mom that obviously someone is coming in their room at 12 and leaving at 3 everyday. But the other part says no it’s not my business. My husband said he’s sure she’s sneaking someone in because he went up there one night to complain to them directly and there was a man in there. (Before we knew it was just a mom and daughter)

Would you want to know if this was your daughter?