Allow your colleague (who _did_ work more hours than you anyway) to complain first about her overtime, and to get hers back first. Make it even better by offering to come in a hour later than you normally would have and instead not having a lunch break, just so the colleague can get out even earlier. Don't forget to use this as a finger-twister later...
Sorry I didn't make it out to the discussion tonight Tish, I didn't leave work until quite late again due to having to sort out a complete headache, and I had similar to deal with all day. Too frazzled to cope with anything by the time I got home, I spent an hour asleep curled up with my very own ginger tom-kitten, who's still asleep even now... All together now, "AWWWWW!" ;-)
Sorry I didn't make it out to the discussion tonight Tish, I didn't leave work until quite late again due to having to sort out a complete headache, and I had similar to deal with all day. Too frazzled to cope with anything by the time I got home, I spent an hour asleep curled up with my very own ginger tom-kitten, who's still asleep even now... All together now, "AWWWWW!" ;-)