By Ffion Lewis A woman who stabbed a man to death at a laundromat in Louisiana did so after managing to prise a sharp weapon from the offender while he attacked her, police have said. The man who attacked her was a sex offender and had only been released from prison two and a half months before the incident. The scary event happened on Sunday when 40-year-old Nicholas Tranchant entered the laundry room near Lacombe with a sharp weapon. He allegedly attacked a woman who was doing her laundry, but she fought back and was able to wrestle away his weapon before using it to stab him. When the polic…