Angela Rayner may be a seasoned hand at Deputy PMQs, but this is an extraordinary week.
The government is facing down a full-blown rebellion on its plans to cut the welfare bill, with around one in four Labour MPs willing to back an amendment that would effectively kill it in its tracks.
One in four MPs. Less than a year into government.
Watch: The battle over benefit cuts
Today, Rayner confirmed the crunch vote will go ahead next Tuesday.
But there are just days to save the bill and prove this is a government that can push through its agenda without being at the mercy of its own MPs.
Mel Stride, a former welfare secretary himself, standing in at DPMQs for the first time, asked if she is "just a little embarrassed?"
A fundamental question for Labour
The deputy PM has faced down several opponents at PMQs, from Boris Johnson and Dominic Raab to Chris Philp last week, and knows how to command the chamber and did so today, turning the question on to the Tories' economic record.
But she also knows the government being defeated on a flagship policy this early on is more than just embarrassing.
The welfare issue speaks to a fundamental question in the Labour Party.
Is it a party, as the name suggests, that is about getting people to work, or about rolling out the state to help the most vulnerable.
A bigger challenge to come
A darling of the Labour left, Rayner today had to publicly defend a bill the government estimates would put 250,000 people into poverty.
Behind the scenes, we understand she is on board with the reforms and there were no hints otherwise today.
The biggest challenge at DPMQs could have come from the benches behind her, but Labour MPs kept quiet on welfare. That doesn't mean there isn't trouble ahead, and persuading those 120+ MPs is the bigger challenge she and her cabinet colleagues face over the coming days.