Most Helpful Guy
"You look nice today!"
Most Helpful Girl
Your heart is in the right spot here, dear, and with Email,' you are even more thoughtful. All you can really do, which may just put a small 'Smile' on her face, that you thought of her to send your very best is, talk about something pleasant and tell her you hope for her the Best in life and that someday someone will come along unexpectedly who is more deserving of her... Very best.
Good luck and blessings to your teacher. xx