Where does “abstinentka” come from?

abstinentka (Kashubian) comes from Kashubian abstinent, from Middle English abstynent, from German abstinent, from Latin abstinēns, from Latin abstineō, from Latin ab-, from Latin āb, from Proto-Germanic *ab.

Ancestry of “abstinentka”, step by step

Step	Language	Word	Meaning
1	Kashubian	abstinent	teetotaler
2	Middle English	abstynent	—
3	German	abstinent	abstinent, teetotal
4	Latin	abstinēns	abstaining
5	Latin	abstineō	to abstain
6	Latin	ab-	from, away, away from; off; at a distance
7	Latin	āb	from, away from, out of
8	Proto-Germanic	*ab	—
9	Proto-Indo-European	apó	—

Every word from Proto-Indo-European apó →Every word from Proto-Germanic *ab →Every word from Latin āb →