Possible sentiments for "Angel".

#1 - "Wishing You Well."

#2 - "Hope You Feel Better Soon."

#3 - "Be Safe."

#4 - "You Are Not Alone."

#5 - "May Angels Smile Upon You."

And, of course, the standards:
#A - Get Well
#B - Happy Birthday
#C - Bon Voyage
#D - Thinking of You
#E - Thank You
#F - Miss You
#G - Good Luck
#H - Good Bye
#J - Sorry
#K - With Sympathy
#L - Keep in Touch
#M - Be Well