Ivey said during the stream that he thinks she thought she had a 3 but was embarrassed to admit it

What if frogs had wings?

They wouldn’t land on their butt when they hop.

Watch the video. She didn’t misread anything.

What if she didn't miss-read her hand has J3 instead of J4, but that the board was T983 and she thought she was open-ended and had 14 outs v Ax.
That explains the "you got ace high" comment and her reaction when Garrett says the first board was hers.

What if the miss-read was different