I'm thinking of leaving my daughter to play with her toys with a stranger.
Why do you want to leave her with a stranger?
I think this is a much better environment for her, because I'm so busy with my job to spend much time with her
It is hard to take care of your child but you cannot leave her with a stranger. The stranger might hurt her and it will be your fault. You should find a babysitter instead.
This is the only option I have.
You should let a family member or at least a licensed caretaker look after her then.