I know so many will hate me for this… But I have a true dislike/hate for Lily. I always found her to be very manipulative and a bad parent.
You are in hiding, knowing there is a traitor in your midst and you don’t carry your wand on you? Then your husband dies and your the brightest witch of your age and you don’t think to do something to save you and your child? You run into a room with your son and don’t think to climb out a window or do something to protect yourself and your child? Your from a muggle family at least have a muggle weapon to help you, but no.
I also think she used Snape, I am sorry but I do. She gets mad when he calls her a mudblood and stops talking to him but gets annoyed (knowing she is his only “light”) when he becomes a death eater if you knew him for so long and you were close you knew how he would react so sorry no love loss for Lily Evans.