This last paragraph does not soud to me like mindfulness meditation at all. What you describe is basically to leave aside all everyday concerns and *focus* on God in the here and now, and to be aware of the presence of God in every and all things in Creation. It is NOT said aloud in the text but,- if you know your way around traditional Christian literature,- there's an implicit understanding that this is a prelude to Worship/Adoration!

Disclaimer: never bothered with Mindfullness Meditation, but. From what I have talked with a practicioner that came to me after I had voiced my concerns about the practice being uprooted from their Buddhist origins; what beginners are asked to concentrate on is on their own sensations and their own physical body, and to be aware that this is not reallity but sensation.

Based on the above, I'd say this practice is to Mindfulness (TM) more or less what love-making is to masturbation.