She knows all your unheard secrets and unseen fears. She is none other than your Maa. You haven't expressed how much you love and care for her, but she knows it because she is your Maa. So, the perfect treat for your mom would be a "Tujhe sab hai pata... Meri Maa" poster cake.
The icing, design of the cake may vary from the image depending upon local availability.