This isn't necessarily a bad review, it's a review to provide information for a specific group of people.
If you are in crisis, if you have an acute relationship problem, if you are bereaved, if you have experienced psychological trauma, or if your relationship problem is not primarily a communication problem, Fiona is not your best choice of counsellor.
My husband and I approached Fiona in a relationship crisis. We could barely talk to each other, and we sought counselling both to start the reparations process and to make urgent decisions about topics like whether or not to spend Christmas together. She was not able to respond to this, instead attempting to go through a standard process - do we exercise, do we eat well, what were our childhoods like. Her approach was very inflexible to our actual circumstances.
I'm a usability designer, part of my professional skillset involves 'reading' websites for intended and unintended impacts on users. This skillset carries over to other environments. My 'read' on Fiona's office space showed little evidence of care for the safety or comfort of clients. The space (a demountable) is tiny and airless, the carpets are dirty and scrunched into a trip hazard. There is not enough room for two chairs, so my husband and I - who were in profound conflict - had to sit next to each other on a small uncomfortable couch. If either of us had been overweight, our bodies would have touched. I had to ask him to pass me tissues and water. Fiona herself sits between the client and the door. This is poor practice in any therapeutic environment because it makes the client feel trapped, however for anyone who has experienced abuse or trauma resulting from abuse (as we have), it is close to intolerable.
Surprisingly, I found Fiona to be a poor communicator. She explained a pattern that I thought actually described our circumstances very well, but when I asked her to explain it again, she instead explained what a 'pattern' was. Fiona is very committed to the idea that all relationship problems are communication problems, and if your problem exists only at that level, she may be able to help you. Ours was not, so the help we got from her was limited.
I am bereaved, my sister was killed 20 years ago. On hearing this Fiona clarified that I 'had' a sister. While that may seem minor, for anyone who has experienced bereavement this is actually a big red flag - it's not true that I 'had' a sister, I have a sister, and my sister is dead. If a counsellor doesn't understand that distinction, they are very, very unlikely to have any further skills around bereavement. I stopped trusting Fiona at this point, and what I saw from her subsequently confirmed that that was an appropriate assessment.
Fiona gave us a handout on deescalating conflict, which was useful.