A 62-year-old woman has told how she became one of the world's oldest mother of twins - after being told she was too old to adopt.Psychologist Krasimira Dimitrova had been so frustrated by adoption red tape in Rousse, Bulgaria, that she decided to take IVF treatment to start her own family.Now Dr Dimitrova has given birth to healthy twins Merry and Jacklyn by caesarian section."I wanted a family but when I was frustrated by the adoption service I realised the only way to make this happen would be to give birth to my own children," she said.