Not the first time she has done this to keep Obamacare
During the 2015 congressional effort to partially repeal the Patient Protection and Affordable Care Act (ACA), MacDonough ruled the provision that would roll back the Independent Payment Advisory Board disqualified the 2015 package from consideration as a reconciliation bill in the Senate under the Byrd Rule, which requires that reconciliation bills must have a budgetary effect. Rather than the simple, filibuster-free 51-vote majority required to pass a reconciliation bill, the 2015 package would require a 60-vote threshold to pass in the Senate, which effectively killed the legislation in the Senate, as Republicans did not hold the requisite votes
Mike Pence has the ability to fire her is he desires.