The woman also charged the Speaker's family with damaging her reputation by engaging in a disinformation campaign.
Arunachal Pradesh assembly Speaker Nabam Rebia has been booked on the charge of physically and mentally assaulting his live-in partner of four years.
The complaint in the form of a first information report (FIR) was filed with the state police after the speaker failed to reply to a legal notice sent by the woman's counsel who sought "restitution of conjugal rights" of his client within seven days.
The woman, the speaker's live-in partner of four years, has accused Mr Rebia of making false promises to marry her since 2011, as well as of cheating, breach of trust and fraud.
Mr Rebia, elected from Doimukh assembly constituency in Arunachal Pradesh, was unavailable for comment despite repeated attempts to contact him.
A male who answered his mobile phone heard the question from IANS and immediately disconnected. Since then, no one has been taking calls on that mobile phone.
"Nabam Rebia had upheld conjugal relationship with (the lady) from 2011 to 2015 because of which she had to severe all other relations of hers. However, for a few months you (Rebia) have been avoiding her. Even after persistent reminding, you failed to support her and give her the status of a legally wedded wife," the notice issued to Mr Rebia said.
The woman's counsel Tabing Lamgu said, "There was no reply from Rebia... so we filed a case against the politician. We will fight the case and get him punished."
The counsel alleged that Mr Rebia "assaulted the woman on several occasions" when he was only a legislator and later "repeatedly pressurised her to undergo an abortion".
The woman also charged his family with damaging her reputation by engaging in a "disinformation campaign".