She is not divine, true. We do not have to bow down or prostrate to her. We can, however, if we want to, and most do. Can we ask her to save us directly as if she were a savior? No, of course not, and we know that. When the Orthodox ask her to save us or the Catholic ask her to pray for us it is well understood that she is relaying our plea to Christ.
Personal expression of devotion is one thing. Liturgically, Mary does not "rate" the same honor as God. My specific example was concerning people in church performing metania by touching the ground at the mention "Remembering our Most Blessed..." and not when we sing "Come, let us bow and fall before Christ..."
The Orthodox Church doesn't have the uniformity we observe on the Latin Catholic side. This makes us more vulnerable to individual zealots who introduce something that is theologically incorrect, even inappropriate, and before you know it it becomes a routine as others copy them.
Orthodoxy also distinguishes little bows (a tad bit more than nods)from the neck in response to priest bowing to the congregation, incensing, blessing, Saints, and a deep (30-45%) bow from the waist (30 or more degrees) at the mention of the Holy Trinity.
Some Orthodox books do say "Theotokos save us" but this is an abbreviation (again by some zealot) of the "Theotokos, through your prayers to Christ, save us." Serbian Orthodox typikon (which is Mt. Athos monastic typikon) does not have an abbreviated version.
If that is true, then you must always end the prayer, in Christ's name. Even then technically, you are still committing idolatry.