Indeed. It's important to also remember that this isn't the first election in which the NLs and Tories have fought as an alliance. To break such an alliance within the next parliament would be damaging and reek of sheer opportunism; to do so now might well destroy the party.
That is why I assume Antonine want it - to crush the national liberals and secur the position for the Liberals. Only scenari I can imagine this happening in is if the National-Liberals split or they end their alliances and the two blocks ally independently with each party - which would mean the destuction of the party.