They told her firmly last month that there cannot be another short delay because of the elections for the MEPs

It would have to be at least a year, and the UK would have to take part in the election of MEPs, fielding its own candidates and paying its own costs.

Theresa May Will Reach Out to Labour in Bid to Avoid Disorderly Brexit

In a surprise move, Prime Minister Theresa May on Tuesday offered to reach out to the opposition Labour Party on a joint plan for Britain’s withdrawal from the European Union, and said she would seek a second delay from the European Union.

That would be a second short delay.

They may well tell her nothing doing.

May to ask for short Brexit extension and reaches out to Labour

Theresa May is to ask for another brief Brexit extension in order to seek a compromise withdrawal plan with the Labour party, she has announced, signalling the likelihood of Downing Street backing a softer Brexit.

In a brief TV statement inside No 10 following a seven-hour cabinet meeting, the prime minister said she would hold talks with Jeremy Corbyn to seek a Brexit plan they could agree on and “both stick to”.

In response, Corbyn said he was “very happy” to take part in the talks, and said he accepted the need to go into the talks in a spirit of cross-party cooperation.

'I fear for Brexit': ERG dismayed by May plan to talk to Corbyn

These people promising not to support any deal worked out with Corbyn have not supported any alternative to a no-deal Brexit, anyway.

They have not supported anything advanced by May, and particularly not the deal she negotiated with the EU.

But May never wanted a no-deal Brexit and back in the day actually campaigned for Remain.

So she's obviously decided to go around them.

If Corbyn and the EU are willing.

The EU has already said the May deal was the only deal, and they would not renegotiate.

So there's that.

And Macron has been making noises like he's lost all patience with the UK and just wants it over and them out.

“The three times rejection of the withdrawal agreement by the House of Commons and the rejection of all alternative plans now puts us on the path of a UK exit without a deal.

“As the European council decided in March, it’s now up to the UK to present a credible alternative plan backed by a majority before 10 April in order to avoid that. 

"If the UK isn’t capable – almost three years after the referendum – of putting forward a solution that gets a majority, it will have decided itself, de facto, to leave without a deal. 

"And we can’t avoid failure for the UK.”

More detail here.