Not completely. Given the circumstances -- OP being new to the company and the other person being "friend of manager" -- I would say it would be really difficu

Not completely. Given the circumstances -- OP being new to the company and the other person being "friend of manager" -- I would say it would be really difficult for OP to pull off a push back. The advice to put your head down and smile can work wonders when used at right occasion (which I feel like this is one).