There was to be one, final, huge opportunity inside the 90 minutes – and it fell to Blackburn. Chandarana played Hornby through in a wide position and she squared for Thomas, but yards from the goal, she somehow skewed her effort wide under pressure from Kitching.
With five minutes added to the 90, every Palace supporter in a bumper crowd made their voice heard, seeing their team through to a vital 1-0 victory.
The result takes them to within four points of the club record-breaking fourth-place finish they attained in last season's Women's Championship – and with four games left to go.
Palace: Kitching (GK), Doran, Waldie, Filbey (Arthur 78), Everett, Olding, Reilly (Johnson 90+2), Haines (Guyatt 90+1), Sharpe (Bailey-Gayle 74), Hughes (Dean 74), Blanchard
Subs not used: Negri (GK), Smith (GK), Gibbons, Wilson-White
Blackburn: Brooks (GK), Dixon (Nokuthula 46), Coan, Fenton, Richards, Crompton (Hornby 46), Hutchings (Chandarana 66), Williams, Murphy, Kur Larsen (Thomas 46), Jordan
Subs not used: Salgado (GK), McDonald, Worthington, Doyle