My daughter (who had waited until 38 to have her first child) found a perfect mom with a Master's Degree in Early Childhood Education to watch her son while she continued worked. My son-in-law's business was failing, and they needed the money. This "perfect" mom also homeschooled her own children and took in 3 or 4 additional infants for extra cash.
Well guess who was watching the babies? Let's just say, it wasn't the person with the Master's Degree, and the baby spent most of the day confined to a bed or child seat with little attention. When someone was paying attention to him, he was being dragged around by the neck by one of the teenagers in the house. (I don't know when they got their homeschooling done.) Of course my daughter and son-in-law both came home exhausted from their long days at work. The baby was put right to bed agin.
When my grandson wasn't talking at the appropriate time, my daughter woke up to the problem, quit her job, and enrolled him in remedial education and speech therapy. It took him 3 years of very hard work to catch up with his peers.
She opened a piano school in her home and hires a part time nanny to play with the children when her students are there, and everyone is doing fine. It was a necessary compromise in her career.
If she hadn't had her piano skill to fall back on, I'm sure she would have been teaching computers or doing taxes at night -- anything to be with the children in the day time. (There are two now.) All the remedial education in the world wouldn't have brought my (very smart) grandson up to speed without his mommy there to talk to him when he felt like talking.