Personally, I do not believe education or experience matters in terms of personal relationship. After all therapy is a relationship. For me to say what will work is like saying next time you go on date, I can tell you which guy or girl you will marry for the longest time! No one can make such a prediction or may be they can...I have not reach that altitude yet.
No one can tell you what works with your chemistry, your personality, your unique situation and your global understanding of your issues. I will say go with your gut and logic intact as much as you can...considering our PTSD, that is a tall order. Have a space for a lot of unknown too. A LOT!
As for me, (since I can speak for me much easier), I have had the worst kind of therapy (a psychiatrist with 25 yrs of trauma experience) and I have had a therapist (second career and about 6 yrs experience - with diploma) and I can tell you the two main difference of ingredient:
empathy - human side that no school can teach
and willing to bend their training (particular modality) to fit with my emerging issues or state of mind (which allowed me to feel trust and safety) - for example using different styles or eclectic flexibility.
If I have to be blunt about the process of therapy at least for me, is that it is really a f...ing weird way of mimicking the whole separation process with the mother from day one to maybe about 4 years. If you are a mother (and I think you are), just imagine that and try to feel the amount of pressure you had with your child and the amount of need the child had for you and how you both managed to allow individualism to still come up intact while still related in a healthy way...
for me I was broken so early in life that I closed off and aimed to become so separate from my mother and never looked back. Getting close was like stepping on needles so you can imagine in therapy. I did not want to be enmeshed but I was motivated to do so and would always say, I have to let my subconscious guide me. I did get enmeshed unwillingly and did not fight it (or fought it but my hope was stronger). it is extremely painful. I felt I was going insane but I have a good, healthy and happy life and could afford to disintegrate in therapy in order to move forward. You know how many days I would instruct my therapist to ensure he calls my husband not 911 if I go wacky....that is how far I was willing to go. We spent a lot of times planning if I go to the other side,I want my husband no 911 and all the other stuff he must do in order not to exacerbate any possible (all in my head of course) of pscyhosis that never happened, of course. That is what happened to me when I was a baby but only my body knew and now I know!
Therapy is much more challenging if outside world is also in crisis. The process of therapy is crisis itself. Two crisis is what makes most people slow down and resist because it is truly the hardest thing to do when outside world is going hard and therapy is pushing inside hard. Who can survive that? Many but for many many years in order to slow down the process so they can digest in much easier and smaller doses.
I did not resist. I went in all in because I could count 100% on my support outside of therapy - a luxury most of us do not have it all the time. I am very sure others notice this too. I think most mental health workers do this too. Make sure one area of your life is going so well, so you have support and motivation to go all in.
My best advise to you is READ, AND EDUCATE YOURSELF ABOUT THE THERAPY PROCESS and psychology in general. Only when you have the information on hand, then you can understand there is a light at the end of the tunnel. This is not surgery. you too can learn what the therapist know...they are only trying to make you see information that is already inside of you.
What a person, whom you never met, has is no relevant to you today. Be there. Be willing. Be informed. Be curious.
I really hope tryingtocope18 you find the right therapist but you have to become the willing client and the motivated client and hope you are ready to accept both the dark and the light side that will come up with humility and grace because our family failed on training us and keeping us safe and now you have to redo and do it differently.