Is she watching me on a nanny cam?

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I babysit two young children and sometimes I wonder if the mom is watching me from a nanny cam lol. She always seems to text when the baby wakes up from her nap and Im downstairs... before I even hear her crying or know shes awake. 

 The camera is on the crib but they dont always have the little tv that came with it, out.  

Is there a way to connect a baby monitor to your phone or computer, think shes watching me? lol or am I over reacting? Theyre very nice people and she knows how close I am to the children. She has given and bought me so much baby stuff. I love this couple as much as I love their children! Anyway, I have nothing to hide, but I just think her timing is always really strange and it makes me wonder.