His life in prison had still been very comfortable. He did not suffer much and only stayed in jail for more than two years before coming out.
Even after killing someone, he was able to come out in just two years!
If he wasn't Bo Junyan's grandfather, Old Master Meng would have long ago lost his life.
She knew that Bo Junyan had already done a lot. He did more than enough. That was his biological grandfather, his mother's biological father. It was impossible for him to do more, and he could not be forced into a miserable state.
No matter how reasonable her mother-in-law was, no matter how disappointed she was with the old man and how she didn't want to see him, she couldn't just watch him suffer.
No matter what, her mother-in-law wanted her father to lead a better life.