In Honkai, I Transform into a Valkyrie from an IF Timeline

Synopsis: People die when they are killed. Everyone dies at the end of their fate, but... if the future still holds choices, their lifeline will not be severed. Even a broken thread can be rewoven, giving them a brand-new destiny. Pardofelis, adrift in the Sea of Quanta, has a body that flickers between reality and unreality. Kallen Kaslana, saved at the very last moment, takes up the thorn-covered cross. And so, they transcend the deaths they were originally fated to meet, gaining new forms and powers. When Eileen transmigrates into the world of Honkai Impact 3rd and discovers that she can take on the future forms of the Valkyries and wield their powers, how will she face the endings they were originally destined for?