By Polly Hudson Kris Hallenga was 23 years old when she was diagnosed with Stage 4 breast cancer. Two GPs had told her the lumps she could feel were probably hormonal, due to the contraceptive pill, and by the time her mum demanded a referral, the cancer had spread to Kris’s spine. Her death was announced on Monday. She was 38 years old. Kris had every reason to be furious, bitter and terrified about her impending fate. Instead she somehow managed to grab death with both hands, while simultaneously doing the same with life. Last year, she organised her own “living FUNeral”, with invitations s…