In 2011, Rachel Williams was busy at the UK hair salon she worked in when her ex-husband Darren walked in and shot her at point blank range.

She had left him six weeks earlier after 18 years of marriage and abuse. Darren shot her and then later himself.

While Darren died almost immediately, Rachel incredibly survived and has spent the years following campaigning and raising awareness around domestic violence.

Rachel today. Source: Facebook / Don't Look Back.

On Tuesday, the 44-year-old who says she's "a victor, not a victim" shared a letter that her former employer wrote for her case to her Facebook page. It highlights what her life with Darren was like.

Dear Sir/Madam,

I employed Mrs Rachel Court

Rachel in hospital following an attack from Darren. Source: Facebook / Don't Look Back.

Rachel had to have her knee reconstructed after Darren shot her. Source: Facebook / Don't Look Back.

Furthermore Rachel was also only allowed her hair to be styled in his preferred style and was not under any terms allowed it coloured. Only one time we broke the tinting rule, the following day Rachel came into work and begged for the colour to be removed. Rachel explained that she had been ordered by Darren to reverse her hair back to its natural colour. Of course it was!"

Rachel now works to raise awareness around domestic violence. Source: Facebook / Don't Look Back.

Rachel, who has since remarried, wrote alongside the letter: "If there are any employers out there or work colleagues please be observant of your fellow staff members.

"If you feel powerless and feel there is nothing you can do, when you think someone is being abused then please please just ask your local police force...Just raise your concerns please."

In addition to the letter, Rachel - who is now a Women's Aid ambassador - has also shared images of her physical recovery from the attack to her Facebook page and has since written a short book titled Don't Look Back.

Mia Freedman talks to abuse survivor Rosie Batty on No Filter.

If you or anyone you know is experiencing domestic violence, contact Lifeline on 13 11 14 or online. For emergency assistance, contact police on 000.