mother begin working again

My mother was a nurse who is trained to look after young children for about thirty years, and quit it three years ago because of her old age. Since then, she has worked for a helper of elderly people as a part timer.

However, she started working again as a regular employee from this winter. That is because we don’t have enough money to pay for my and my younger sister’s school expenses. I’ve appreciate her much effort and kindness recently. She is not young any longer (though I cannot tell her exact age…), but she is still working. I’m really respectful toward her!!