I've finally found someone who remembers my dad and his family

Well, driving amost 700 km was worth it. I've found my great-grandparents' grave and I've found the old lady who remembers my dad's family.
The only downside was she was preparing herself for today's eye surgery, was a bit nervous and not in the mood to sit down for some hours and talk. But she was very nice, despite her age very active and promised to reveal all she can remember after she gets over that surgery a little. She had known my dad's family before the WW2, even my father, and had spent some time with them in the concentration camp Terezin, even witnessing my aunt giving birth to her daughter there. So, it looks really hopeful and I only have to pray for her to get over her surgery well and soon. Hope, this doesn't sound too selfish… Of course, I wish her the best, she just deserve to be here as long as possible for all the horrible things she had to endure in the past.
On the tombstone there are more names than my great-grandparents. The next three ones, the aunt who survived the holocaust and moved to South America had let carve – these are the names of her parents and her sister that dindn't have the luck. Of course, this is just symbolic, really Im memoriam, as nobody knows the exact date of their death and presumably their bodies were burned and never buried. And the last names in the bottom are names of her husband's parents who also died in some of the concentration camps.
So the mosaic of my family history has become a bit more complete.