jane foster becomes mighty thor, and become worthy for mjolnir

[AverageFrenchPerson]

So you’re telling me Mjolnir Repaired itself for Jane after it was destroyed by Hela, Yet Didn’t do it for Thor when he could have really needed it during Ragnarok?

[ferntheplant]

I think this toke place during the events of ragnoark so there couldn't send mjolnir so it toke another host nearby

[trainjunkie]

Now thor can fight with mjolnir against the hulk after hulk can return to normal again.