I would leave them in the tank for now, this is her first spawn so I would let her learn how to raise the young in the tank. In the future if you wanted to save fry, I would wait until they are free swimming for a few days to separate, the mother will feed and provide care when newly hatched. They will probably breed like clockwork every two to four weeks, so I wouldn't be too worried about losing some. Convict mothers are vicious defenders, I wouldn't be surprised if she keeps the other fish in a corner for a while.