I just mean within her own party - it doesn't necessarily mean the Conservatives will be out of office, only that there is, for whatever reason, instability within the party. At least two people ahead of her in seniority and name-recognition, Johnson and Gove, are out. Certainly, everyone expected Boris Johnson to take over. I expect he declined to run, because he intends to see how things play out. Boris Johnson will be back in the future.
Whatever the Tories’ problems, they are avoiding the civil war that Labour is having.