Where does “ममिया सास” come from?

ममिया सास (Hindi) comes from Hindi सास, from Sauraseni Prakrit ?????, from Sanskrit श्वश्रू, from Proto-Indo-Aryan swaśrúH, from Proto-Indo-Iranian swaćrúH, from Proto-Indo-European sweḱrúh₂, from Proto-Indo-European swéḱuros — father-in-law.

ममिया सास (Hindi): maternal aunt-in-law; husband's or wife's maternal aunt

Definitions

  1. maternal aunt-in-law; husband's or wife's maternal aunt

Ancestry of “ममिया सास”, step by step

ममिया सास traces back through two separate lines of ancestry.

via Hindi सास

StepLanguageWordMeaning
1Hindiसासmother-in-law
2Sauraseni Prakrit?????
3Sanskritश्वश्रूa mother-in-law
4Proto-Indo-AryanswaśrúH
5Proto-Indo-IranianswaćrúHa mother-in-law
6Proto-Indo-Europeansweḱrúh₂mother-in-law
7Proto-Indo-Europeanswéḱurosfather-in-law

via Hindi ममिया

StepLanguageWordMeaning
1Hindiममिया(of a cousin brother/sister) related through one's maternal uncle
Every word from Proto-Indo-European swéḱurosEvery word from Proto-Indo-European sweḱrúh₂Every word from Proto-Indo-Iranian swaćrúH