'No she's definitely not ill in any way, shape or form. She's simply bone bloody idle.'
That is very judgemental. There are some illnesses that cannot be seen from the outside. When I was a student nurse I went out with a community mental health nurse. He had a patient to visit whose house was, as you would describe it, a tip and that person just sat around doing nothing. But he was not idle, not at all. He was extremely unwell with depression that was so debilitating that he was almost catatonic. This community nurse simply rolled up his sleeves and did the washing up while I had a quick tidy. We were not being judgemental, not at all, because that nurse knew that by doing what little we could would make the patient feel a tiny bit better.
So, how do you know that this young mother does not have similar problems? Maybe taking the children to school is the best that her illness will allow her to do.
Judge not, lest ye too be judged (or something like that!)