They can be a useful organisation, but focus very much on the practical help, rather than the emotional trauma associated with crime.
I am connected to VS and also training to be a counsellor, and I find that there is actually very little cross over.
The emphasis is very much on empowering the service user to feel safer (practically - alarms, apps, sleep advice etc), and clear on how confusing situations like trials, police liaison and court may play out. Emotional support IS touched on, but VS isn't a counselling service, and I think a lot of people leave feeling like their needs haven't been fulfilled because of this.
VS will offer you brilliant practical solutions and are well worth engaging with, to see how you feel talking about the situation if nothing else. They're great people and will help you make some sense of things. But be aware that you may find that actually the support you are searching for may mean you need to engage with a counsellor, and that's fine too.
Hope you are able to find some comfort.