The fan, known only as Kaileen, posted a message on her page meant for the Blank Space hitmaker, expressing her sadness on the holiday since she lost her mum last year (14).

Kaileen wrote about losing her "best friend", and how the death made a "hole in her heart" that was soon filled by Swift's music and positivity, adding, "Because of you, I got through something that was the hardest thing in the world for me. Today's going to be another hard day, but I know with you on my side I can get through anything."

Swift, who revealed last month (Apr15) that her own mother, Andrea, is battling cancer, reached out to Kaileen and sympathised with the fan's struggle.

She wrote back, "Kaileen - I love you so much and can't imagine what you must be feeling today. You've lived through my worst fear. I'm so sorry you can't spend today with her. It's not fair, and there's no reason why you should feel okay about it. No one should ever expect you to feel normal today.

"I admire and respect your ability to put forth such a sunny, sweet disposition when you've been through something so dark and tragic so recently. I never would've guessed by your attitude or your posts. I never would've known if you hadn't told me. Sending you a huge hug today."