Where does “Bethie” come from?

Bethie (English) comes from English Beth, from Proto-Semitic bayt- — house.

Ancestry of “Bethie”, step by step

Bethie traces back through two separate lines of ancestry.

via English Beth

StepLanguageWordMeaning
1EnglishBethThe second letter of the Phoenician alphabet, 𐤁
2Proto-Semiticbayt-house

via English ie

StepLanguageWordMeaning
1EnglishieAlternative form of i.e
Every word from Proto-Semitic bayt-Every word from English Beth