The premise between father and daughter is not as farfetched as some are saying.
Dad is just awkward since he has been a soldier all his life. Loves his daughter, but isn't expressive. Daughter misunderstands everything on her own because she internalizes everything instead of actually asking or saying anything (this is where my frustration will definitely come from if the author continues this flaw/trait of hers too long). Because she never asks him or says anything relevant, the dad doesn't realize how he comes across to her.
I can really empathize with the FL's situation. My dad is not an expressive person, except for anger. He was always away for work when i was little, and he also has a hot temper. I was scared of him for a long time and thought i was a burden on him and that he didn't love me, because he never outright smiled and conversations were super limited in length, and usually about something i did wrong. This continued until i was around 20 years old, when i had taken communication classes and confronted him about all of it. He cried. After a long talk, with my mum involved, i understood that nothing i thought was true, and because i internalized everything, i villainized my own father and missed out growing up. We get on relatively well, now, though our interests are still nowhere close to similar. I have a couple of friends from my school days who shared similar stories with me, too.
This sort of shit happens in real life and we always wonder at how long we had let it be in control of our lives/relationships.
Tldr; the premise and length of misunderstanding between father and daughter is totally realistic. The drama will prob stem from the daughter's flaw of internalization, which gets old fast for onlookers.
@Illnott @moonnoya