Its not mentioned in the anime, but if u read through the manga you will find it.

Hey do you think freya is really in love with Bell or is he just one more for her collection that she calls family

It is mentioned in both volume one and sixteen

It really was in the manga, chapter 8. Thanks guys. Also, seeing as Freya sees Bell's pure soul, I guess she might actually not think of him as a limited-edition action figure, but it is still likely she sees her as a collectible figurine. However, seeing as she says she'll follow Bell to heaven and leave Orario, it is also possible that she loves Bell.