I'll agree with that ... Mary is as dead as any other saint that has gone before, which is to say, she's not dead at all, but very much alive.
After all, Jesus said so (John 11:25-26) and Paul says flatly that Jesus has destroyed death (2 Tm 1:10) and that death now has neither sting nor victory (1 Cor 15:55).
So Mary is quite definitely alive. In fact, since she is perfectly freed from sin, she is more alive than you or I are.
Since you know the Bible so well, you obviously already knew that, right?
You are correct. The non-material (spirit/soul) part of Mary is very, very much alive. But she is dead in the sense that she is separated from this physical world (2 Cor 5:6,8).
Contrary to popular belief, everyone has eternal life. It’s only a question of “smoking” or “non-smoking”.
In her separation (death), she can do nothing for anyone. And I’ll stick to the Bible by not allowing the veneration of Mary in my worship of Christ.
‘Cause it’s all about Jesus.
Good observation.