i wouldnt worry to much about it my dad always told me i couldnt have a dog then one day the neighbores were selling chhuahuha's ( spelling?) and i bought one anyways my dad was mad for about 5 minutes then everyone fell in love with her she's so cute im sure your mom would get over it it's not like you could just throw it away.. well you could but that would be awfully mean just be responsible about it help buy food, train it what ever