If a new command overrides the last one then...
Why would Elle still be compelled to follow the "kill Char" order even after given other orders like when Char told her to tell him how she really felt about him?
Because this movie was poorly thought out and full of holes when it comes to how the orders work.
In the book, the orders were suppose to stick once they were given. As example, when Ella was eight her mother ordered her to never tell anyone about the curse and that order held until the curse was broken. However, orders could be countermanded by later orders on the same subject. So when Char says, "Marry me," Ella says "Yes." But when her step-sister immediately tells her not to marry Char then Ella says she won't marry Char.
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