The first recorded Women's game to be played at Champion Hill, I can find is the 1977 Women's FA Cup final between Southampton and QPR held on 15th May 1977, with over 3,000 in attendance in the old Champion Hill stadium. The game highlights shown before the men's FA Cup final with Bob Wilson as commentator. QPR ran out 1-0 winners.
the next game was the delayed 1994/95 London women's cup final between Arsenal & Millwall Lionesses in August 1995
The next women's game played at Champion Hill was on Sunday 10th September 1995 when Dulwich Hamlet Women's football Club (formally Lambeth WFC founded in 1986 as Patmore Youth Club) ran out against Hackney WFC in the WFA Cup preliminary round (Alsion Murphy star scorer)
Debbie Glanfield, T Balogun, Catherine Dooley, Alison Murphy, Hazel Sarjeant, Martina Killick, Jackie Phillip, Marie Foley, Diann Charles, Dee McLaren, Bebrey Gurten subs Maz Keenan, Chidi Anyiam, Fola Munis
Source: 10th September 1995 programme notes