After surviving a roller-coaster RHI ride that threatened to end her career, it would be deeply ironic if Arlene Foster was eventually taken down by something as mind-numbingly dull as the Executive Committee (Functions) Bill.
Mrs Foster successfully brought her legislation through Stormont in the face of vigorous opposition this week, but at what price? She has been badly wounded in the process.
As we head into the Assembbly's summer recess, the danger to Foster comes not now, but months down the line if a Sinn Fein minister goes on a solo run and the legal mechanism to stop them is gone.
The DUP leader has left herself with little political cover. She ignored advice to pause the bill from senior party figures - deputy leader Nigel Dodds MP, Westminster chief whip Sir Jeffrey Donaldson, and MP Sammy Wilson.
Foster effectively put what she felt were her responsibilities to her Executive colleagues ahead of those to her senior party ones. Neither did she bring her proposal to fast-track the legislation through the Assembly with Michelle O'Neill to DUP party officers.
"If this goes wrong six months down the line, it's on the heads of Arlene and Emma (Little Pengelly)," a senior DUP source said. "They have staked their credibility on this."
Little-Pengelly is the DUP special adviser and barrister who believes the legislation doesn't endanger the safeguards her party secured against ministerial solo runs in the 2006 St Andrews Agreement.
Former DUP special adviser and barrister, Richard Bullick, who was instrumental in negotiating those measures, very publicly disagreed.
He's three years gone from his old job, and now works in the private sector, but it's testimony to the respect that still remains for him that so many MLAs appear to have trusted his judgment over Foster's.
There remains concern that she is not over every "jot and tittle" of complex issues. "This was about policy, not about Arlene personally," says an MLA who rebelled. But he believes Foster was "stubborn" in not putting the brakes on the legislation until the autumn when she saw the level of unease in her own party.
Those 11 MLAs abstained so they have cover with their constituents, and don't pay an electoral price, if Foster's call on the legislation is wrong.
Until now, her position in the DUP was stronger than it had been in years. RHI was well behind her, and her first six months as First Minister have been flawless. She was seen as stateswomanlike on Covid-19 with approval ratings among nationalists that she once could only have dreamed off. While O'Neill has been embroiled in controversy over the Bobby Storey funeral, Foster hasn't put a foot wrong.
Previously defensive with some broadcast media since RHI, the DUP leader had her mojo back and delivered confident performances. She will be feeling the pressure after this week's events and likely regretting her actions. But she is as tough as nails and has come through much worse.
Yet there are potential landmines ahead. She has to bring Irish language legislation with O'Neill through the Assembly, likely next year.
Those 11 MLAs may now have a taste for rebellion. Their action could also embolden others in DUP ranks who didn't like the bill but lacked the guts to abstain.
Legislation on the Irish language is considerably more emotive for unionist MLAs, MPs and voters than a highly technical bill about how the Executive functions. For the DUP leader, 2021 could prove to be a very dangerous year.