Precisely because there isn't any. I think they infer from the fact that she is never mentioned again after Acts that she must have just "poof" disappeared bodily into heaven. Wouldn't you conclude the same thing? One minute her name is mentioned then it isn't. She must be standing at the right hand of Christ in heaven. Yeah, that's it. And because Scriptures did not say that she WASN'T born sinless, then "poof" that must mean she was.
The RCC: putting the "antics" in semantics.
It’s rather heart breaking to watch followers of the RCC not being able to use scripture for their beliefs when scripture clearly states that we should. Yet they blindly follow for some reason. I know some of them truly want to follow Christ but have been so indoctrinated that they can’t seem to let go of false beliefs.