Netflix Premium all have access to account information?

My mother has bought me and 3 of my friends netflix, the premium abo so. My mother is not thrilled that everyone can access the account data because they need the password and the email address to log in. My question is whether one can protect the account settings with a certain password?

No do not think so, but I solved it so that I just created a mail account at google just for netflix.

No, and it can even cancel or add to any package and lock you out by changing the password. That's just awesome!

No, the premium subscription is also not intended for sharing among friends in different households.