Eleanor Barnfield, 47, from North Cornelly, Bridgend, died in hospital after police were called to a crash on Coity Road at about 12:40 BST on Monday. Officers found she had sustained puncture wounds unrelated to the collision, which the BBC understands were caused by a stabbing.
A 61-year-old man from Bridgend was arrested following a significant police operation at Ger-y-Nant, a sheltered housing complex run by Valleys to Coast. He remains in custody.
Eleanor, who worked for the housing association, has been described by her family as the "kindest, most loving, bravest person in the world." In a tribute, they said: "She meant everything to us and will be forever loved and missed deeply by her devoted family and friends. She was our rock."
Chief Superintendent Jason Rees said: "Our thoughts remain firmly with Eleanor's family. I want to assure the community that teams of detectives and specialist staff are investigating. We appreciate the patience and support of residents, especially those displaced following the incident. Local communities may notice an increased police presence as our investigation continues."