Not good at babysitting

After I stay close to a 2-year old kid for 2 days, I feel sick.

She needs so much attention that I can't afford. I feel sorry for her and for myself. I am here to take care of her pregnant mom--she's going to have another kid. I can do cooking, laundery, and driving, but not taking care of her daughter. She's a cute kid. But she keeps doing meaningless things and wants others to locking eyes on her. Her mom's spoiling her by satisfying all her needs and not leaving her one step away at home. I don't like that. But I'm not the parent so I keep silent. I'm watching the mom and the mom stays around the kid so I stay around the baby. It's boring. I don't like the mom's life. Even the mom herself told me: after she got married, she did not feel any change; but after having the 1st baby, she found she lost freedom; and now she has no choice but keep going.

If I have a baby, I will be hard hearted. I will focus on my own life and give my baby just basic attention. If I care about him/her too much, I will begin to hate the baby.