Well, I was right on my first assumption that the ninja's being threatened to complete her contract (impossible as it is) or else. But without a translation, the 'why' will remain forever a mystery.
Indeed, this series only sees translation sporadically unfortunately.
Prove it.We won't tolerate any more screwups.May as well go in guns blazing.Remember your training.Almost time for our shopping date!I can't wait to see him!No more messing around.Got it?