Aconitum
For Aconitum the rule is: You never let each other down.
The ultimate 'forsaking' is dying, someone comes into an Aconitum state on the death of a loved one or when this has been experienced up close. The fever with fear of death is well known, but when someone has been in a situation where he/she has been shocked to death, a complaint can arise that can disappear after Aconitum.