Adaptation
She had experience taking care of a baby who was 14 months old before, but this was her first time taking care of a newborn infant. On the other hand, this was her first experience looking after a newborn baby who had just recently been born. This newborn demanded a lot of attention and devotion from its caretakers when it was firstborn.
They did their best to provide it with both. Even though she felt awful about him having to fend for himself at such a young age, she was well aware that this was the least of his worries. She felt bad about him having to fend for himself at such a young age.