Possible ways through which increased maintenance application can be denied in court in section 125

Possible ways through which increased maintenance application can be denied in court in Section 125

I am giving maintenance to my wife as per final court order in 125 case on monthly basis 20K from last 2 years. Its almost 7 years i m struggling , this case was filed with other case like DV , 498A by my wife. 

Now she was saying that she will apply maintenance increase application in Family court to extort more money  from me. She is neither giving divorce nor coming back but only intention to extort money. Please help me know the ways through which i can save my money , bound court not to increase. 

1. Can i take a property which i can show in court that i taken loan for this house. Currently i don't have any house, i m living on rent. Through this can i increase my liability?

2. Is there any chances she can claim her rights on this new house property which i will purchase? Although i m giving her maintenance already on monthly basis.

3. In divorce alimony she can claim her rights on this house property ?

Please help me.

Thanks in advance. 

Thanks

Nikhil Sharma