Sweet Adorable Wife, Please Kiss Slower!

They separated, if I'm not wrong.

Stepmother got in jail, father was regretting his attitude toward his fool daughter, half-sister somehow had a contact with a mysterious person to ruin MC's life. 

Well there won't be much of the friction as the mother is all up for the her daughter and LZ.
These is the line LWw says when LZ's dad proposed to LWw's mom... "Guess the lovers are turning to be siblings now". (700+ chapter)
Somewhere around 4-500th chap I believe... not sure of the exact chapter. 

Yes Lin Wanwan may not label him as Sugar Daddy yet but that is what he is to her right now. She is alway saying LZ you are always good to me or wondering why is he so good to me. 

lol 

Well... She was not abused per se... But kept captive ( no much difference here). She was free to anything as long as she stayed at home and had no contact with her daughter... (That is worst then being dead). 

Pls spoile Bo'er , Su Han and Fu Ya 

when does this happen? 

Apparently he loved her a lot. When she suddenly disappeared (mistook that LWw's mother ran away), he took out the disappointment on LWW.
14 years later he sees her at the hospital, ( LWw mom tried to hang herself to get rid of LZ'S DAD) who currently seemed fine and was seen agreeing to get married to LZ'S dad. So in the fit of possessiveness, he goes to the hospital as a doctor and stilts her veins.
( I'm not entirely sure if the mother is dead. As it could be Zhanbei's ploy against the obsessive father and a way to free her and also not become a brother to LWW.)