Article 10 of the Interpretation of Marriage Law (II) stipulates that the people's court shall support the request of a party to return the bride price paid according to the custom if it is found that it belongs to the following circumstances:
(1) Both parties have not gone through the marriage registration formalities;
(2) Both parties have gone through the marriage registration formalities, but they have not lived together;
(3) premarital payment, causing difficulties to the payer.
The application of items (2) and (3) of the preceding paragraph is conditional on the divorce of both parties.
Therefore, the bride price supports the return in law, but the law also attaches importance to evidence. It is suggested that it is better to collect evidence by recording before prosecution. It's best to convince others who know about it to testify.
As for her collusion with the boss to threaten you, as long as she doesn't really beat you to extort money, the general public security doesn't care