I can't tell if you really don't understand what She's saying or just being Obtuse, but let me see if I can explain what She means.
The Disciples saw Christ get crucified on the cross. They were horrified and scared. They went into hiding and even denied knowing or following Jesus.
3 Days later, Jesus was resurrected, He went to his disciples and renewed their faith and strength, because he was resurrected, they knew he was who he said he was and were not afraid to die for what they knew was the truth.
If Jesus didn't defeat death, his followers would not have continued because he would not have been who he said he was, which is our Savior.