Replacement FT for buzzer sounding?

[La Rikardo]

Was doing a girls freshman game today. White led 41-40 with around five seconds left and was at the line shooting two. As she puts up the first free throw, table sounds the horn to inform me that the girl who'd committed the foul had five. The free throw missed. White's coach wanted a replacement free throw. I told her no because the only way we can give a replacement free throw is if B violates. We got the DQ'd girl out of the game and shot the second free throw, which was good. Blue missed a three at the buzzer and White won.

I don't believe there's anything in the rules that give the officials discretion to award a replacement FT for anything other than a violation by B. Am I wrong?