Money lender pressurizing me

You can file criminal case against her.

Register complaint with the following if you are in Karnataka or else find out similar office.
REGISTRAR OF COOPERATIVE SOCIETIES - HEAD OFFICE
http://sahakara.kar.gov.in/HeadOffice.html

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Dear Sir,
Get issue a legal notice through lawyer and wait for his response and if he ignores the legal notice you send him the notice second time.
After second time also if he ignores you can file a suit in the civil court which comes under your jurisdiction.

Taking all the documentary evidence available at your end and also you can claim for damages for cheating you and causing pain and litigation fees too.

1. Two legal notices and their acknowledgements
2. Promissory note between the parties
Suit value of 3 lakhs the court fee payment is 5426/-in A.P and Telangana and more than
three lakhs if you want to claim for every ten thousand hundred rupees of court fees to be paid.
Hopefully once you send the legal notice the party would approach you for a settlement.

Try to inform about you situations if not ready then approach nearest police station

I have gone through your query in detail.
1) You are a Victim of Private Financier. You are paying Rs.40k / 10% Monthly for 5 lakhs is exorbitant charges. You seem to be a educated person then too you have taken a loan @10% monthly is quiet surprising.
2) Due to the lockdown situation even the financial institutions such as banks and NBFC have relax the norms for repayment of the loans and other installments. This lady is pressurizing you for money make sure that you record all her calls and SMS.
3) Send a legal notice n file a case against her for her exorbitant charges of 10% interest rate.
4) Also you have not mention is she taking 10% on monthly basis or yearly basis. It is high time that you should take a legal action against such kind of private financiers without registration, n take them to the court for further law and order so at least other common people may benefit from such kind of unofficial financiers.
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ADV. ANISH PALKAR (High Court)