Should I be worried?

My mom came into my room not even 5 minutes ago asking if I wanted to go on a walk before her day started. She was in her work uniform, but being that it's 5am and I just went to bed I didn't. But then I remembered she wasn't working so I was in to tell her that. I looked all around the house, in he bathrooms, her bedroom, ect. I can't find her anywhere. I didn't hear any doors opening. And the weirdest part is that the automatic lights we have installed around our house come on from movement and don't turn off unless 5 minutes of no movement occurred indicating she never left the house or even left the upper level. But she's not there