Can’t find our Apple Watch, but the locator says it’s everywhere

Hi,

so my daughter cannot find her Apple watch. She turned on the locator before we left on a trip, and it stated it was at our home, but we still couldn’t find it. We left on our trip, and when we got to our location, the locator stated it was at our location, so we searched our belongings, and still couldn’t find it. Now that we are back home, it is stating it’s where we went on our trip to… so frustrating, because it was never there. So, can the locator be wrong? Does it glitch?