Elven Aloofness Level 1
As much as you might care for them, you've come to terms with the ephemeral Nature of non-elves, and it makes their threats feel less troublesome. If a non-Elf rolls a failure on a check to Coerce you using Intimidation, it gets a critical failure instead (and thus can't try to Coerce you again for 1 week). When a non-elf attempts to Demoralize you, you become temporarily immune for 1 day, instead of 10 minutes.
Source: Advanced Player's Guide pg. 43