advice for messaging beabadoobeeeee…?????

maybe this is a stupid question but my gf loves her so so much and also happens to look exactly like her so what are the odds that she would respond to me on instagram and say hi to her or smth?? or like a response? ive heard she sometimes talks to ppl and responds soo i thought i would try. should i keep messaging everyday or just leave it at the one message? thanks !!!!