It can be use to prepare a promissory note as is she had aobtained the loan from them. It may not be used for any other purpose. To threaden her they may have obtained the signature. If the signature has obtained from her by force or threat then ask her to make a criminal complaint against them.
If you’ve signed a blank paper then it can be misused by entering any information by the person who took the papers. For example,
Agreements will be typed in stamp papers so there may or may not be validity for agreements because agreements may end at a date or may not end but stamp papers once signed are valid for life.
The repercussion in case you sign a blank simple paper or a blank stamp paper is the same. What that matters is your signature on a paper.
Any mischievous person can write any thing above your signatures and bind you in accordance with the contents of the said writing. Such a person will get the same witnesses by two persons and then there you are left without anything except for compromising and seeking mercy from such a mischievous person.
Best thought to getting out of this could be proposed once the document is brought into existence. In case you are lucky and the person in whose custody the said paper is good hearted and conscientious then the best that can be done by you is to get back your said paper.
This is a very serious mistake you have done,each and every trap is possible against you
Immediately you should file a complaint against that person who has illegally got these signed from you,and keep safely its duly stamped/signed copy from police station and also get it published in a news paper saying it signed by mistake and warn to use it and give it back to you and keep that paper also safely
If it seems you matter is serious and you can efford a few thousand rupees you should move to court
Reference: Section 4 in The Negotiable Instruments Act, 1881
4. ÒPromissory noteÓ.ÑA Òpromissory noteÓ is an instrument in writing (not being a bank-note or a currency-note) containing an unconditional undertaking signed by the maker, to pay a certain sum of money only to, or to the order of, a certain person, or to the bearer of the instrument. Illustrations A signs instruments in the following terms:Ñ
(a) ÒI promise to pay B or order Rs. 500.Ó
(b) ÔÔI acknowledge myself to be indebted to B in Rs. 1,000, to be paid on demand, for value received.Ó
(c) ÒMr. B. I.O.U. Rs. 1,000.Ó
(d) ÒI promise to pay B Rs. 500 and all other sums which shall be due to him.Ó
(e) ÒI promise to pay B Rs. 500 first deducting there out any money which he may owe me.Ó
(f) ÒI promise to pay B Rs. 500 seven days after my marriage with C.Ó
(g) ÒI promise to pay B Rs. 500 on DÕs death, provided D leaves me enough to pay that sum.Ó
(h) ÒI promise to pay B Rs. 500 and to deliver to him my black horse on 1st January next.Ó The instruments respectively marked (a) and (b) are promissory notes. The instruments respectively marked (c), (d), (e), (f), (g) and (h) are not promissory notes. – 202100256-20210043-10928-NEW369 – 202100256-20210043-10928