And if placing the child in day care while she works to support that child an indication that she is a bad parent?
I would answer yes, she is a bad parent if it was her choice to be a single parent. The situation is then of her own making and her child or children suffer.
But as someone else pointed out I think most of the time we are talking about dual income families who chose to put young children into child care, better to look after your own children at home and have less of an income.
So based on what you are saying, if an unmarried woman gets pregnant, she should have an abortion so the child won't suffer? What logic!
And as far as I know, no woman except the Blessed Mother ever got pregnant by herself. Where is the call for male responsibility?