For the past 4-5 years I have worked in the same building and company as my sister.
We were 3 floors apart and in different departments but still here together.
We didn't each lunch together often or even always get to talk every single day (although mostly) but we were here together.
Today she is beginning a new job within our company. I am very proud of her.
But she is now gone from our building. She is working from one of our satellite offices.
And I miss her already.
And I am happy for her but sad for me.