Sadness after experiencing abuse

Rayn
It's been an emotionally intense half a year. Without too much detail I've grown up in a violent, emotionally and mentally abusive family, with a lot of negative emotions. Over the last 6 months, I decided enough was enough and started to separate myself from the family and their toxicity. Now, I have no real relationships with my sisters and mother. They're not particularly nice and kind people. Although, I've experienced a lot of hurt due to their actions and behaviour, I seem to feel a sadness even when I know I have done the right thing by removing them. I was thinking about why I felt sad at the loss and whether other people felt the same after similar experiences. Otherwise, I'm content, happy and enjoy who I am as a human. Then sometimes, my heart hurts because I no longer have a family that I can be myself in and be liked within. I can't put my finger on what it is that causes this hurt. 
Thank you in advance for your thoughts and time.