The fact that she "rolled her r's" in accordance with her German accent would seem to indicate that there is a human component to this divine manifestation. I have never read in my KJV Bible any place where the Holy Spirit "rolled
His r's."
Also, in Scripture it is rather common to see one "Person" speak to another "Person" as though they were a "seperate entity..." see
Psalm 110:1, for an example. But then we find the same grammatical construction in other passages of Scripture where there is clearly just one "person" who is clearly intended such as
Luke 15:17 and
Psalm 42:11.
The Godhead has complexities within itself, but God is still one.