I think that author fucked up his own timeline. Lilia was with MC for 10 years. Then after Lilia almost died to the present day it took 2 years. So 10+2= 12 years. Then accident where MC mother died was one year before Lilia coming to MC house. So 12+1=13 years. Then how is that possible that this flashback is taking place 12 years ago? If I am correct then MC mother should've died 1 year before current flashback..