A good therapist has a healthy attitude towards autism, and a positive attitude towards your child. They take a collaborative approach to therapy, and they don't try to fix what isn't broken.
Do you discourage stimming? A good therapist will only discourage harmful or destructive stims (like biting or pulling people's hair), and will help the child learn safer and healthier stims instead. A bad therapist will punish a child for any type of stimming, even if it's completely harmless, because it's a "weird" or a "barrier to inclusion." How do you feel about eye contact? A good therapist may not prioritize eye contact, or may teach a child to fake it if eye contact makes them uncomfortable. A bad therapist will be inflexible about eye contact, and may punish a child for not making it, even if eye contact causes the child distress. What would you do if a child had a meltdown in therapy? A good therapist will respond with empathy, and de-escalate the situation. They might let the child take a break, or offer comfort. They may also mention strategies they use to help avoid meltdowns, like encouraging the child to ask for breaks as needed, or talking with the child and validating their feelings if the child looks upset. A bad therapist will punish the child for melting down, or get involved in a power struggle. How many hours per week of therapy do you prefer to do? This will depend on the type of therapy. A good therapist will keep in mind that therapy involves work, that children have limited attention spans, and that kids need rest. A bad therapist may suggest very intensive therapy, even 40 hours per week. Forty hours a week is as intense as a full-time job, and isn't appropriate for children, especially since school is already hard work. What types of goals are common for this type of therapy? A good therapist will have goals related to helping your child grow into a happy, healthy, assertive, and well-adjusted autistic adult. They will also be open to hearing your goals, and your child's own goals. A bad therapist will try to "cure" or extinguish any signs of autism, no matter the cost to the child's mental health.