How do you tell your kids?

My 10 year old can be pretty high strung and has problems with anxiety.  Since she experience her first full blender anaphylactic reaction just over 3 years ago she is more fearful of death.  This has also increased in severity after the unexpected death if a toubd na. She was especially close to.  To her tbe was the super cook older bRotherham she was going to marry.

how the hell am I going to do this???  Any thoughts?  Suggestions?  Advice?