You May Now Kill the Bride (Return to Fear Street #1) R.L. Stine

Two sisters, divided by time. Each with a terrible resentment she can barely contain.

Two Fear family weddings, decades apart... Each bride will find that the ancient curse that haunts the Fears LIVES ON. It feeds off the evil that courses through their blood. It takes its toll in unexpected ways, and allows dark history to repeat itself.

In this Fear Street story, family ties bind sisters together—till DEATH do they part.