Is she wrong?

So this girl I recently met a few weeks ago and I are military wives. She’s at my house all day everyday which is fine because her husband is away and she is lonely and new to our area. She’s a few years younger than me and is new to the military life. My husband recently came home from training and she’s been here every evening which is fine with us. She told me she cheated on her previous boyfriend and didn’t care. I am 35 weeks pregnant and with my toddler all day long so I told her and my husband I’m going to nap after I served them and my daughter dinner. I expected her to leave after eating dinner. I wouldn’t sit with my friends husband that I recently met for 2 hrs alone. Am I overthinking?