Fern doesn't realize it, but Frieren basically helped raise her at this point. She started teaching her magic five or six years ago when she dropped by to say hello to Heiter and then took her along as her apprentice. By the end of this "mere ten year adventure" Fern will be a grown woman and Frieren will remain physically unchanged, even if we're starting to see that she is changing inside and she is more affectionate to Fern than she's shown to be to any other character both in the present and in her flashbacks. She gets her birthday presents, she pats her head, she sleeps on her lap. Just as Fern doesn't realize Frieren became her mom, Frieren herself also doesn't realize she became Fern's mom.
Fern doesn't realize it, but Frieren basically helped raise her at this point. She started teaching her magic five or six years ago when she dropped by to say hello to Heiter and then took her along as her apprentice. By the end of this "mere ten year adventure" Fern will be a grown woman and Frieren will remain physically unchanged, even if we're starting to see that she is changing inside and she is more affectionate to Fern than she's shown to be to any other character both in the present and in her flashbacks. She gets her birthday presents, she pats her head, she sleeps on her lap. Just as Fern doesn't realize Frieren became her mom, Frieren herself also doesn't realize she became Fern's mom.
fun fact: the voice actors for Frieren and Himmel are the same of Anya from SpyxFamily and Bakugou for Boku no Hero 🤯