My biological parent passed away a number of years ago. I did not live with this parent, and had only infrequent interactions(once or twice a year) with them through the years. This parent also had children after I was adopted out. A recent Facebook post came up with them expressing how hard it is without the parent, and they tagged me in it.
I obviously had a different relationship with the BP than they did. It seems wrong to offer condolences since it was a shared parent. I just have a bit of sadness when I think about the passing of BP, not the great loss that my half-siblings have.
What is a good response in a situation like this? So far, I haven't posted. I tried a couple of times, but couldn't think of something meaningful.