i think a gift for your mother at her birthday is very necessary.i used to thought that my mother wouldn't be happy if i waste money to buy her a gift.but i'm wrong.I bought her some flowers at her last birthday.she was so happy that she talked many many things that we have never talked with each other.and from then on,our relationship become better.Maybe buying her a a present isn't the best way to show your love.but for us who feels hard to say out love it is the best way.