Also, the prayers in his book kind of tread the line of what is acceptable for Catholic laity in this regard. We must be careful to distinguish deliverance from exorcism (he does), but part of that is not addressing demons directly. The Church advises us to always pray in the form of asking God to drive out the demons, and not directly addressing them. I’m not 100% certain if this book stays in that guideline.
However, Mary and I have both been praying out of this book off and on since Christmas, and it definitely seems effective prayers.
That said, Alexandra should be totally blind, according to her doctors, and the fact that she sees at all is proof of the Holy Spirit working in her.
The author has a few different websites. One focuses on warfare, while the other focuses on healing. You can read his warfare prayers here and his healing and deliverance prayers here.