Hawaii for 2 weeks???That's awesome. My envy radar just went off:)
In regards to referring to former family members, each case is different. I might be in a bit of a unique sitch in that my x-ILS refer to me as their daughter in law. I am close to them and my x BIL still refers to me as his SIL. I don't know. You will feel arrive at what feels right for you.
Good luck on the quest for the new position!
3 kids BD 12/15/13 (IDKIILY. ) Rope dropped Cirque du Soleil style D final 9-9-14 "Some people are born on 3rd base and go through life thinking they hit a triple." Barry Switzer