After building up the suspense on the ITV soap, the female was revealed to be Faith Dingle, the mother of Chas (played by Lucy Pargeter) and Cain (Jeff Hordley).
Faith, portrayed by Sally Dexter, was unmasked to the whole village after she kicked up a fuss and refused to get into a ambulance so that she could receive medical treatment.
Cain was heard telling the other Emmerdale residents: “Yeah, I know who she is.” While his sister Chas added: “Hello, mother.”
Following the revelation, many soap fans took to social media to comment on the latest dramatic development.
“Wow the lady Sarah helped is Chas' MUM she didn't look impressed @emmerdale #Emmerdale,” posted one stunned audience member.
A second Emmerdale viewer simply posted: “Woman in barn" is Faith Dingle #emmerdale.”
Faith Dingle is unmasked on Emmerdale
Faith Dingle looks at it a photo of Chas and Cain on Emmerdale
While a third fan of the ITV soap tweeted: “#Emmerdale She's Cain & Chas' mum. What?? Why is she here??”
There had been hints that the mysterious woman could be Faith after there were scenes in which she was interacting with Sarah Sugden (Katie Hill) and appeared to know the schoolgirl.
A number of people had already started to theorise that it was Faith before this evening's episode confirmed it all.
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Chas and Cain Dingle were not pleased to see Faith on Emmerdale
Faith Dingle got into a fight with Eric Pollard in Emmerdale
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Now questions hang in the air over why she is in the Yorkshire Dales village and what illness she is suffering from.
While many at home may still be in the dark for now, Faith certainly made an entrance as she was seen fighting with Eric Pollard (Chris Chittell) over a full English breakfast which ended up her lap. It was also clear that the glamorous, outspoken matriarch was not on good terms with her two children who looked unsurprised to see on Emmerdale.
Emmerdale continues on ITV tomorrow at 7pm.