Why can't Radha spare everyone with the truth?

Perhaps I am misunderstanding this, but why doesn't Radhika just state the truth about her having married Dev the first time around?

Does she particularly enjoy her family and husband being humiliated? Only she can put an end to Vishaka's shenanigans, and very quickly just by saying the TRUTH? I've always maintained that Radhika is not particularly bright, and has an aversion for TRUTH, despite being Kanha's bhakt.

Too many tears from her, but no action.