A mother and her three children were killed in a house fire less than an hour after emergency services received a frantic call for help, an inquest heard. Bryonie Gawith, 29, Denisty Birtle, nine, Oscar Birtle, five, and 22-month-old Aubree Birtle died following the blaze at their home in Westbury Road, Bradford, in the early hours of August 21. Bryonie …