teacher is something you cannot forget, and I believe that she treated you well when you were in school without any selfish motives, and it was completely out of the love of an elder for a younger person, so you should be very happy to have such a teacher who loves you.
Then the teacher's kindness is unforgettable and should not be forgotten. What gift should we give? Your teacher is 50 years old this year, so I suggest you ask their family for a family photo, and then order a family portrait doll online. In this way, she will be very happy if you give it to her in person on her birthday. Such a gift is not only very commemorative, but also reflects your thoughts, which is really good.
There is also birthday blessing chocolate, which is imported from Spain, with a higher purity of cocoa butter and a softer and smoother taste. It is a good birthday gift, which is novel and sweet, and can reflect your gratitude to the teacher.