That's a bit of a non-sequitur, as most people that believe in God's omnipotence do not question his capabilities. The characteristic that is in in question here, is His wisdom. Do you think that after the Book of Revelation was written, there are people that are receiving insights into heaven that only a few exceptional men have obtained? And these men wrote their visions in Scripture, of which nothing is to be added.
Plus, your beliefs in this woman's testimony, also presupposes that heaven is open to saints before Judgement day. Which I don't, for example.
And obviously, no one is obligated, or even expected, to agree with everyone on the forum. But, it is incumbent upon all to test the spirits, and discern delusions and hallucinations when presented before us.
I agree that there may be mitigating circumstances for children who die before the age of responsibility, but again, that's not the question here. Who invited this women into the abode of the saints, which is currently forbidden to all. And then, in order to reveal what, more doctrine worthy of Scripture?