A woman stabbed to death in Luton has been described by her sister as "a very caring person".
Shirley Vincent said: "She was my big sister and she liked to be called the matriarch of the family, being the eldest.
"She could be quite odd - but she didn't like to think she was an old lady, she was 70. She lived for her daughter and her grandson. She was just a big sister. She was there for everybody."