What do you think Bellatrix thought about the fact, that she didn't get to be the one, to help Voldemort back into his body & what would she have said to Crouch Jr., if he'd made it back to Voldemort?

Because I believe that BCJ was nowhere near as fanatic and devoted to Voldemort during the first war, as Bellatrix was... Because he was dying within a year in Azkaban though believed Voldemort to be alive, which also likely makes his emotion in the trial genuine and not an act, and he was crying out for his mother, AND in the end he WAS saved from Azkaban by his mommy and daddy. All that would probably affect Bella's attitude towards his worthiness as a DE...

...so, I could imagine Bella being especially pissed off and maybe throw a somewhat stinging/mocking remark at him...

...but I haven't yet decided what it literally might be.