I want a wish granted with no magic?

magic is a sin and i heard that if you ask god for something selfish,like money. it won't work so is there anything that a dog can do to help someone else? i have a feeling that my best friend and i will soon be VERY far away soon. so i need a new one,like a dog. my parents don't want a dog but i need one. i am so lonely at home. my sister bullies me and my mom wont help so i want a new friend who i can walk with. i am just 13 and my dog and i are separated. im in the u.s. and the dog is with my aunt in el salvador. its so sad without your dog and whenever i see picture of him, i wonder: how come my aunt is REALLY poor and yet she is taking care of a high maintenance dog. but my parents have a big house,4 computers, 3 TV, 2 cars,(my aunt doesn't even have a car) they got a new balcony 2 years ago and its HUGE. and they never..EVER.. have to ride the bus to work(my mom stays home) my aunt has been really poor and she never got broke on that dog. however, my aunt has depression problems and my dog helps her so now we can't have him back and my parents knew this. i asked my angel to let me have a dog on christmas but still..... i am afraid i might be selfish in his and god's eyes. so what good can a dog do? by the way, when my my mom had that dog she was always calm(she liked him but my dad didn't) and now these 4 years with no dog she is always picking fights with my sister and me and she has a HUGE stress problem now. my sister never bullied me until like 2 months without the dog. my sister has become a monster and my dog used to always keep us in control(lol) whenever we were mad or sad, he would cheer us up. when my sister and i got in a fist fight my dog would always stop us. now my mom has lost confidence and my dad just hated the dog.we don't know why. so how Can be worthy enough to have my wish granted by god(he always has to approve an angel's action according to the bible i think.) so what good does a dog do?