お気遣いありがとうございます。
お気遣いありがとうございます。
Thanks for letting me know.
Thanks so much for your good thoughts.
Thanks for worrying.
Thanks for keeping me in your thoughts.
Thanks for your interest in me.
Thanks for caring.
Thanks for keeping me in your heart.
I appreciate your hard work.
We appreciate your concern.
Thank you for your letter.
Thank you for your letters.
あら、ありがとうございます。
気にかけてくださり、ありがとうございます。
It is very thoughtful of you. Thank you.
Thank you for looking after me.
Thank you for looking after me.
お気遣いありがとうございます。
Thank you for looking after me.
Thank you very much for your kind consideration.
Thanks for letting me know.
Thank you for your kindness when I was ill.
Thank you for your kind advice [suggestion, warning].
I thank you for your kindness.
I am much [greatly] obliged to you for your trouble.
Thanks so much for your good thoughts.
Thank you for the confirmation.
Thank you for your commiserations.
I am obliged to you for your solicitude in my behalf―interesting yourself in my welfare.
I must thank you for―I am obliged to you for―your solicitude in my behalf.
I wish to express my appreciation for your kindness.
Thank you for your kind remarks.