hear me out people....
MC finds a time machine that has enough power for one trip and saves Molly from death.
MC arrives at Hour 16 of the day he found the Family Farm destroyed, if he doesn't go there immediately he loses his chance to save Molly. May or may not be able to prevent Julia from being captured. Molly is still alive when he gets to her, he should be strong enough for his Minor Heal to let her live (or give her a Healing potion if he has one).
Option 1: All saves after that day are gone, replay the game from that point but with Molly alive. Some subsequent events will be significantly changed...
Option 2: MC fades from the alternate timeline, but knows he saved Molly (and keeps XP gained).
Maybe it's not a time machine per se, but something happens that turbocharges using a Spirit Potion to let him change Molly's fate?