If he'd have met, she'd have just said it wasn't positive and Corbyn wasn't constructive
Which is not the same as
On Wednesday night the PM met the SNP, Lib Dem and Plaid Cymru leaders but not Labour leader Jeremy Corbyn.
She said: "I am disappointed that the leader of the Labour Party has not so far chosen to take part, but our door remains open."
https://www.bbc.co.uk/news/uk-politics-46900367
You're dealing with the general public here. The narrative of hey look, Corbyn's the only one who won't meet the PM, is worse to damage control than what you said.