Vous_____ me le dire

Question

In the test for the above, the translation reads as 'You shouldn't have told me'.  Shouldn't the translation have been ' You shouldn't have told me that'?  I am trying to see where the 'le' fits in the translation given.

Answer

Bonjour Meghna !

Here it's about colloquialism in both languages.
You are correct that the "le" in French means "it/that" here, but in English you tend not to express it, whereas in French it's always necessary to add it:
I'm glad you told me [it].
Je suis contente que tu me *l'*ai dit.
I'll add [it] to the question to remove any ambiguity :)

I hope that's helpful!
À bientôt !

Answer

Thanks Aurélie. The clarification is helpful indeed

Answer

Between "Vous ne l'auriez pas du me dire" vs. "Vous n'auriez pas du me le dire?" Not sure but I believe the former is grammatically correct.