which side?

At my daughter's first dance recital(?)/concert thingy (yes she was fabulous and gorgeous and of course stole the show, well sang the loudest!) the dance teacher was giving awards and speeches and thanked Simo profusely for being her "left hand man".

Does that mean she's his right hand woman?
Or that she's left handed?

All language funnies members present agreed it just wasn't quite right... thoughts anyone?