It was utterly heartbreaking to watch, wasn't it. I will never forget Fawziyah's brave, brave mum.
Practical steps to change things, a few I can think of off the top of my head:
Donate to, fundraise for, or volunteer for one of the many national and local organisations who work to support victims of DA/VAWG.
Raise awareness - social media, blogging, in person, as part of an activist group.
Educate our sons, our daughters, and ourselves about these issues.
Lobby politicians/crime commissioners to make DA/VAWG a priority (see the Met Commissioner's statement the other day)
Work as an IDVA/ISVA, in victim support, or in some other relevant capacity within the criminal justice system.