Did she demand lounge access? That's not supported by any part of the story. She says she asked for return taxi fares so they could manage the baby at home, and when that was denied she asked for lounge access. The fact that they were denied is not a problem per se, but the 1 hour stand-off and heated exchange were very unnecessary. And it seems that the meal voucher was given to defuse an out of hand situation.
What is very, VERY telling is the wording of the tweet from Virgin in response to the pax's claims that Virgin staff threatened her for saying she would post her beef on social media:-
"Hi there, we understand delays can be frustrating to our guests and we do everything we can to avoid them, however
Virgin Australia does not tolerate guests being abusive towards our staff.
Virgin Australia welcomes all feedback from our guests including feedback received...."
They DO NOT say the she was abusive, just infers that with a general statement. Same with the "we welcome all feedback", which doesn't deny that the staff in question made that threat.
So it would appear that many AFFers are happy to call her a whinging liar, whereas Virgin wouldn't. And I strongly suspect that the staff in question will be undergoing re-education in customer relations.