In the rapidly evolving field of mental health, online therapy for children has become a promising alternative to traditional in-person sessions. This digital revolution has significantly improved access to professional help and made it possible for children to receive mental health support right from the comfort of their homes. However, with the plethora of online platforms and therapists available, it is imperative, as a parent or guardian, to be discerning and assure the best quality of care for your child. To ensure this, one must engage in a meticulous evaluation process involving asking the right questions to potential online child therapists.

Understanding the implications of the Lambert's Law in the context of online therapy, for instance, can be beneficial. This law, named after psychologist Michael Lambert, indicates that 40% of client change is attributed to extratherapeutic factors, 30% to therapeutic alliance, 15% to expectancy (hope/credibility), and 15% to techniques and models used. This breakdown underscores the importance of a strong therapeutic relationship, which can be established by asking the right questions before starting therapy.

The first question to ask concerns their qualifications. While a therapist’s credentials may appear adequate on the surface, it is crucial to understand the depth of their expertise. For instance, inquire about their knowledge and experience in applying Piaget's theory of cognitive development or Erikson's stages of psychosocial development, both of which are central to understanding children's mental health. Moreover, a therapist well-versed in Bronfenbrenner's ecological systems theory can provide a comprehensive understanding of a child's development considering the interaction between various environmental factors.

Next, you should ask about the therapist's familiarity with the specific issues your child is experiencing. As the Dunedin Study, a comprehensive longitudinal study conducted in New Zealand, revealed, childhood experiences and mental health conditions significantly influence adult lives. Thus, a therapist specializing in the specific concerns your child faces would be more adept at providing targeted interventions.

Ask about their approach to therapy. Are they more inclined towards a cognitive-behavioral approach, a psychodynamic approach, or a combination? Do they incorporate elements of Seligman's positive psychology in their practice? A grasp of these theoretical orientations will help determine whether their therapy style aligns with your child's unique needs.

In online therapy, the digital platform used plays a significant role in the therapeutic process. A system that adheres to the encryption standards set by the Health Insurance Portability and Accountability Act (HIPAA) ensures the confidentiality of your child's information. Hence, it's essential to ask about the technology used, its user-friendliness, and data safety measures.

Another significant question pertains to the process and frequency of therapy sessions. Will the therapist provide regular updates on your child's progress? What would be the mode and frequency of these communications? This is crucial, as the Meehl's Clinical vs. Statistical Prediction theory propounds, regular feedback from the therapist can significantly enhance the efficacy of the therapy.

Lastly, inquiring about the therapist's plans for emergency situations is essential. As the Treatment Interfering Behaviors (TIB's) concept in Dialectical Behavior Therapy (DBT) suggests, having a clear crisis plan is pivotal to manage any untoward incidents and ensure your child's safety during therapy.

Choosing an online therapist for your child is a significant decision, requiring careful thought and deliberation. By asking these pertinent questions, you can ensure that you choose a therapist who not only meets your child's needs but also provides a safe, secure, and effective therapeutic environment. Remember, this is an investment in your child's mental health, a cornerstone for their future well-being and success.