After a run of four months without a win and sitting in the relegation zone, East Fife Ladies knew their game against third from bottom Murieston was a must win.
A glorious chance fell to Teri Skivington who opted to shoot when free on goal with the outside of her right foot rather than her left but put her shot wide and over.
She more than made amends shortly later, though, after a ball forward was nodded on by McAllister and she beat the keeper to the ball to slide it in to the bottom corner.
East Fife started the second half under a lot of pressure as they were now against a strong wind but managed to hold Murieston off with a defensive display.
With tension growing, Murieston were lucky to keep all 11 on the pitch after Reilly was fouled in the penalty area and Kirsty Graham was taken in a tackle that could have resulted in a serious injury.
Knowing that a goal either way would prove important, Skivington finished off any chance of a Murieston comeback after keeping her cool and drilling a right footed shot beyond the ‘keeper.
Manager Liz Anderson said: “We had a lot of pressure on us as these are the games we must win to stay up. We go away to Kilmarnock next week knowing that we must offer more of the same.”