
i always mate every 48hrs as each mating will cover that time so one on consecutive days i think isnt nesscessary. if you tried tommorrow and couldnt get one because she has gone over then again i wouldnt be worried either because the one the day before would have it covered if that makes sense.
But then i have large breeds so matings are more risky due to size if either of them decide they didnt like the tie so i feel 2 matings spaced out should cover it.
Everyone has their own way they prefer to do things i guess, if the previous tie was completely calm then trying tonight wont do any harm
Good luck either way :)