@_@ not to be rude anon but you completely missed the entire point of that post.
If Alice had the time or option of course she would’ve tried to save her son. thats the difference. thats the point. if the scenarios were on them, she WOULDN’T have had it. Voldemort would not have asked her to step aside and given her the option of CHOOSING to die over choosing to live. He would’ve just killed her because she didn’t have a high ranking death eater that he respected asking him to spare her. She would’ve gone fast without a second thought just like James. And so the protection would not have occurred. And so there would be no ‘marking him as equal’ because the curse wouldn’t have had anything to backfire off of to split his soul and create the horcrux. It would’ve just killed baby neville. does that make more sense?