Private Tutor vs. Online test prep

I’m looking into private tutoring for DD who is registered for the July 2018 ACT. We can afford a private tutor, I’m trying to decide which route produces results. DD has mild reading comp issues and has extra time accommodation. She is super motivated and disciplined. I’m looking into Arbor Bridge, Green Test Systems and Testive. I will NOT use Prep Scholar based on poor customer support in the past.

This interests me as well