Help with my shrieking Mustache Parakeet

I have a Mustache Parakeet that is very noisy almost all of the time. I'm wondering if I got another bird as company, will it help? Will she be quiet? Will they not get along? Is it okay to get another type of bird or is it best that I get another Mustache? Will it become double the screaming?

What are my best options here?

Please help!