We can actually deduce here that he is trying to say that wrong decisions taken can jeopardize the lives of those who are involved or related to her. Therefore she should take heed and make the right decision.
An important decision is seen as the option that one decides to go with is seen as the best and needed option at that particular time. Someone once said that "Decisions shape destiny". It then means that any decision one makes will determine how the destiny or future of that person will be.
We see here that in the given statement, the speaker is actually admonishing that Cassie should take caution and make the right decision.
Learn more about decision on https://brainly.com/question/27004710
#SPJ1