person A: My father in law was diagnosed with pancreatic cancer when our first daughter was 9 months old.
person B: That's so sad. I'm sorry to hear that. Is he getting a treament? 
person A: He passed away 9 months after diagnosis_comma_ when she was 18 months old.  She just turned 18 this year_comma_ so it's been awhile.  But he never really got to know her and never met our 2nd daughter at all.
person B: Wow_comma_ that's awful. I hope you can tell her all about him and share some pictures at least. 