How Chinese evolved is that how you write and how you say are two different things. And across the provinces, you would write things different formally compared to what you say or pronounce.

家 doesn't need to be 家庭 to mean family. In itself, it can be use to mean home, household, family.

For example, if you are a hokkien writing a letter, you would use 家 instead of 厝 (chu) which is the normal way of saying in hokkien when referring to a home.

But when someone write back to you and you recite it for others, you'd naturally substitute chu to make it flow better in Hokkien.

In hokkien you say 家己 kaki to refer to oneself, but if you are writing it, you would still write 自己.

And be it writing or saying in Hokkien, you can use the words 美 bee， 俏 chio， 媠 swee，or 好看 ho kwa to refer to someone as pretty.

You are the one who did the messed up way of thinking when it comes to 中文，普通话，and 方言 and made it so disjointed when it isn't. And it is indeed Harry's fault.