I think it's fair to put her a tier ahead. Soma's affection based attack power lead basically evaporates the moment you hit Daniela's skill whereas Increase Range is very niche. The gap between the two is actually pretty intense if you routinely use 3 archers in your team, something which isn't actually a terrible choice given how easy it is to skill up Daniela once or twice. Increase Attack 1 is pretty common and many of the other units who have it aren't terribly valuable anyway.