The lady driving the tractor is LACW Lillian Youle (later Rollison). Oddly her name is often misspelt Yule in captions for this IWM image, but confirmed as Youle by one of her nieces.
The posed picture was taken at Fiskerton during the summer of 1943. The Lancaster DV238, EA-O, is serving on 49 Squadron. It later went to 44 Squadron (as KM-M) and was lost on a raid to Berlin on 16/17 December 1943. Only one of her crew survived.
In 1943 Bomber Command employed 128,000 ground crew of whom just over 34,000 were WAAFs.
Cheers
Steve