Oooooooh - I had one of those fromt he supermarket.
They are nearly impossible to kill. Mine lived on the window sill infront of the kitchen sink for about 9 months. It shrivvelled, regrew after watering, flowered again, shrivelled again... Don't know what it's called Lady P - but I reckon even you with your green credentials can make it work!
I think one of my old housemate's cats* ate it in the end.
*Evil Oscar.