Her plays have explored porn, technology and life in her childhood home of Belfast. Stacey Gregg talks about tackling 'gender fraud' with the award-winning Scorch and interweaving tales of IVF and abortion in her new work, Choice"I find it hard to switch off," admits Stacey Gregg. "The great thing about writing is that you are free to write about anything, to grapple with what's happening in the world." For the Belfa…