I phoned the gallery. I've been putting it off and putting it off because I was so nervous that my painting wouldn't have sold in the auction but finally plucked up the courage and...
... the painting didn't sell and I feel really crushed :((
Christine at the gallery told me very few people turned up. She said (in a sad voice) nobody wanted to support the NSPCC.
It doesn't make me feel any better but I suppose I'll just pick myself up and carry on.