Children should not forge a parent's signature. She knew this was true, but she was so afraid. She never failed before. Not ever, in her God forsaken life. Failure was her greatest fear. But either way she was going to fail.
Failure through disobedience?
Or failure through procrastination?
Both are such horrible failures, that she couldn't choose. So she forged her mother's signature, and poor mummy never knew of the black zot in her little lamb's wool.
Does little lamb truly deserve survival?
Little Lamb, you shall be sentenced to the fifth and eighth circles.