Hi
Your friend can do the divorce herself and save lots of money. The divorce process itself is quite easy and straightforward
all really well explain here:
https://www.gov.uk/divorce/overview
I would also recommend that she buy a book to understand the divorce and the financial implications. I used the following and it really help me understand the process and have the confidence that yes, I could do it myself.
http://www.amazon.co.uk/Your-Own-Divorc ... 1845283554
For the finance part (which is separate from the divorce process) I use a solicitor as I felt it was too risky to do it myself.
I used Burgess Mee and they were nice and did the job efficiently
All the best to your friend. It is tough but in the end, she will be glad to move on with her life.