YOUR PROFILE of Carla Powell portrayed someone other than the woman I know. Carla Powell, whom no one in his right mind could blame for Peter Mandelson's downfall, is one of the kindest, most thoughtful women in this country. Whenever something or other goes wrong in my life, an all too frequent occurrence, it is always Carla who calls to commiserate. She usually restores my spirits with lunch, always cooked and served by herself in her kitchen, often with a diverse and entertaining collection of friends. Her pasta is the best, and her friendship makes London a better place to live. Shame on whoever wrote the vicious attack on London's favourite Italiana.