I'm pretty sure my mom poisoned me when I was little.
Why do you think that you were poisoned?
I noticed her smiles seemed forced or fake.
Are there any other signs that you can think of. If not, it seems like a little paranoid to think that based off of a smile.
I am sure she wants to kill me since I became more popular than her.
I think you might want more evidence than smiles or some made up popularity contest. Accusing someone of poisoning you is a very serious claim.