Scripture also calls her the mother of "God."
To paraphrase you: Words mean things "Mother of my Lord" is the same as saying "Mother of God"
So you're saying God the Father had a mother, eh?
Oh really? The word used in that verse is kurios.
http://biblesuite.com/strongs/greek/2962.htm
kurios: lord, master
Original Word: κύριος, ου, ὁ
Part of Speech: Noun, Masculine
Transliteration: kurios
Phonetic Spelling: (koo'-ree-os)
Short Definition: lord, Lord, master, sir
Definition: lord, master, sir; the Lord.
The same word is used here.
Matthew 25:18 But he that had received one went and digged in the earth, and hid his lord's money.
And here.
Luke 12:47 And that servant, which knew his lord's will, and prepared not himself, neither did according to his will, shall be beaten with many stripes.
And here.
John 13:16 Truly, truly, I say to you, a slave is not greater than his master, nor is one who is sent greater than the one who sent him.
Never was it translated God yet you say it means God?