My 2 Yr kid when left unattended she stares at wall and smiles. If she is engaged in playing she doest stare or smile. Is it a problem?

A. If your child is constantly doing it then it may be a problem but if your child is occasionally doing it then it is not a problem with kids do different different kind of activities so it’s very difficult to say whether it is normal or not but if it is a continuous behaviour then it could be a problem