The substitute defender produced a superb goal-line clearance seconds from full-time in a 0-0 draw at home to Liverpool.
The hosts had themselves hit the bar in a hectic three-minute period of stoppage time as a game of few chances belatedly opened up.
Manuela Vanegas, again outstanding at the back, almost completed her own perfect afternoon when she headed against the Liverpool bar going into stoppage time after Jelena Cankovic’s deep cross had been nodded across goal by Caitlin Hayes.
That was followed by a scramble in the box before thoughts of Albion snatching a late winner rapidly changed to preserving the point.
Chiamaka Nnadozie had to pull off an awkward save from Aurelie Csiallag in the dying moments.
Grace Fisk sent the resulting corner past Nnadozie but Mpome read the danger and stretched out a long leg to get the ball away.
The same defender had earlier pulled off an excellent covering tackle on Csillag.
Albion were on the defensive for significant periods of the second half but got bodies in the way and offered goalkeeper Nnadozie good protection right up until added time.
But they struggled to pose a threat to Jennifer Falk, who was equally untroubled in the Liverpool goal.
Maris Olislagers was involved in big moments in a goalless first half.
Her superbly angled pass sent Fran Kirby bearing down on goal.
But Kirby tried to tee up an open goal for Rosa Kafaji and her square pass failed to find its target.
Albion had several promising moments in the final third before the break without the right end product.
At the other end, Olislagers’ blind pass gifted Mia Enderby a great chance which she fired over.
The Albion left-back then produced a superb challenge in front of goal, when the same opponent looked set to fire her side ahead.
Nnadozie produced a routine save from Ceri Holland at her near post in the first half.
Albion are winless in three at home but this point, while not without merit, was the most they deserved.
Albion: Nnadozie, McLauchlan (Auee 87), Hayes, Vanegas, Olislagers; Symonds, Cankovic; Kafaji (Tsunoda 73), Rayner (Noordam 62), , Haley (Mpome 62); Kirby (Tvedten 87). Unused subs: Poulter, Baggaley, Camacho.