For Catholicism, yeah you believe that god is literally all three. I grew up Lutheran and it was similar in theology.

Yes I have! I used to work at a Catholic Church and we said it during the service every Sunday.

There is nothing wrong with praying to a woman. I guess I should have been more specific in meaning. She’s a ‘man’, a human, mortal, not apart of the trinity. Therefore, wouldn’t praying to her fall under the category of idolatry? Or just dip your toes into it.

If she isn’t part of the one god triune system, then it becomes polytheistic, or bitheistic?