I am confused by their family relationship is Daphne's grandfather really her grandfather?

Wdym? are u thinking she’s adopted or smth? Her grandfather is her maternal grandfather, there was a panel of her mom dead, surrounded by flowers. She looks a lot like her mom which I’m guessing who also looks a lot like her grandmother. We still don’t know who her dad is or what he looks like

Same. I couldn't help but wonder, what about her father and paternal family? Why isn't there a word about them? Was she illegitimate and they don't know who her father is? Or is he dead as well? I'd really like to know why her father isn't in the picture or the paternal family, unlike her maternal family. (〜￣△￣)〜

Her grandfather is currently absent from the house, her uncle is called young duke and is still the successor, probably acting as the duke while his father is gone

She is living with her maternal family and who her father is isn't mentioned yet

Thanks for explaining! The translation was making me confused