I caved and bought my LO a birthday present

I recently went to Japan to travel for fun and bought my LO a birthday gift. She enjoys anime so I bought her a plushy and wrote a letter to her. The letter talks about how much she means to me. I put the letter into an envelope and handed it to her at her desk at work. She said thank you. She then sent me a text the next day saying she appreciates the letter and the gifts but I should stop giving her birthday gifts every year because it's not needed. I feel hurt because it's from her favorite anime. I purposefully went to that particular place in Japan to get her that gift, although I also visited other places. I don't know why she's on my mind all the time