Annie Mumolo opened up about her experience working on the film.

Russell received the sole screenplay credit.

That was a toughie," Mumolo began.

“It’s a tough business.

I don’t know what I’m allowed to say.”

Wiig was reportedly mulling over starring in the lead role.

But their interpretation is completely David’s original."

A rep for Russell did not immediately respond to EW’s request for comment on Mumulo’s recent statements.

I feel like it’s exponentially harder for that reason alone.

And then I was asked to do things that were against my morality, and it was very difficult.

When I didn’t feel comfortable doing those things that were against my values, I was lambasted.

I can’t say too much.

I guess probably because I was living in fear."

They just don’t.'

And he said that’s a hard thing.

He was a very big advocate for me back then.

It was tremendously scary and a life lesson.

It was a lot of upheavals, and it was just very strange.

It’s something I never saw coming."

Mumolo explained how difficult it is to speak up for yourself.

You might not get hired again because you’ll be perceived as being “difficult."'

I just kind of had to swallow it.

It’s just one of those things about the writer’s position.”