Most plants can have a second flush, Sheila, but usually not as impressive as the first. I am not sure what you mean by cutting it back though. Cut off the dead flower heads by all means but Lewisia is a rosett forming plant so there is nothing else to 'cut back'.

Thanks Bulba . . . yes, I just meant the flowering stalks. I have 'dead-headed' it, but seen no new buds as yet.