At a guess; comfortable Conservative majority, LibDems catch up to Labour and oop north the SNP lose ground to Labour.
This leaves the (currently) unelected harridan and her cronies free to do as they please (not that they can't anyway) whilst maybe nullifying the threat of the independence...
She's stepping down to have the caravaning holiday across Europe she always wanted...you know...before it's too late.
Edit; I'm going with snap election (or announcement of intention for a motion on it anyway) before Brexit. I can't stand her or her merry band of tosspots being in charge but...