As a CASA I have participated in the relational component of healing... I think any therapist using any model who can connect emotionally with the client and show them unconditional positive regard will be a healing therapist. However 'connect' is a "big if" when you are talking about a traumatized child.
My CASA youth had a parent with serious mental illness for 12 years. After 4 years of CBT therapy, followed by a suicide attempt, I became her 3rd CASA when she was 16. I studied up on therapies for CPTSD trauma and advocated like a tiger to get her access to Neurofeedback. It took a year+ to get permission.
I told her that as her CASA I thought it was important for her to be aware of existing trauma therapies other than CBT, that she could avail herself of in the future if desired. We met 2 NF people and an EMDR person. One of the NF people was someones she connected with, so she did about 35 sessions of it which CHANGED HER LIFE.
After about 8 sessions, she began dropping into her emotions and connecting the dots of her life, writing powerful poems, being willing to be comforted. 35 sessions, the total treatment, is about 20 clinical hrs. Her depression remitted totally. Currently at a UC, on track to graduate. Good friendships. 3 years at same job. Still close to former foster family.
The right brain is programmed by implicit-- not explicit-- learning. CBT uses L brain methods to talk to R brain. R brain responds better to somatic methods, NF, relational methods, co-regulation through dance/synchrony, etc. Stuff that activates R brain.