no I think they were just fired. they only tried to kill her because roger wouldn't leave her alone and he loved her.
Let's hope. The relating of the leaving was from the Count's point of view, so he only knew what he was told, which is they were fired. It bugged me that the coachman also seemed like it was kinda 'standard procedure', but I'm guessing not EVERY person let go would be killed, but any that would fight for the Count and threaten their status quo? Yeah. Who knows what investigating this attempted murder charge the Count is starting will reveal.
wait since priscilla wasn't the first girl roger talked to does that mean the other maids that got fired were also killed?