Family dog passed away at 18 yo. Vet is impressed how our Kika lasted so long…I already miss her

First photo is her at 7 years old. Last one I took today (she passed away this morning during her sleep). It feels strange how she looked so peaceful as if sleeping but her body didnt shift at all (not breathing). It was hard but I felt the need to say the final goodbye…

I’m a but worried how my parents will handle this change, she was everything to them.