Throw them out
Even though Bai Zemin was only muttering to himself and didn't expect a reply from anyone, even more so considering that there was so much noise from the crowd in the vicinity, there was still someone who followed his lead.
"Father, are you perhaps talking about Big Sis Evangeline?"
Bai Zemin freed a hand to pat the slightly too smart girl on the head and while still pulling the wheelchair he nodded, "Your Big Sister Evangeline had a very difficult childhood, and her big sister is the same as well. I really hope things have reached a good end for both of them."
Bai Shilin narrowed her eyes like a cat and enjoyed his caresses happily as she continued, "Big Sis Evangeline has been missing for more than eight months now. Although Mom Bing Xue and Big Sis Yijun tried to contact her it seems she destroyed the intercom and hasn't returned since."