How to make her prove expenses?
I'm not sure we even want to go there, but I'm curious how you can make a court have either party prove their expenses? Bmom had many lies on her expense list. The judge clearly stated he took each of the expenses into account in the CS calculation.
The biggest expense she has is "mortgage". She listed $2000 for a mortgage that she doesn't even have. Her mom is a property owner and let her move into one of her homes. While it's possible bmom may be paying her mom some "rent", it is highly highly unlikely it's 2k, and in fact it's more likely it's zero. She also listed very inflated numbers for other areas. Ours were super low. The judge or courts never asked for proof on anything. Is there a way to make them ask for proof? It's simple to confirm she is not the homeowner, etc.
Re: How to make her prove expenses?
I don't think OP is asking for BM to prove how the CS is spent, more so prove that her expenses require a certain amount of CS, and that is a different scenario.
OP, I would think that your lawyer needs to ask for a CS modification, and go through the whole shenanigans of doing a full expense report, and this time he needs to request proof of those expenses that can be proved. Such as a mortgage, car payment, utilities, etc.
I know for us that was an important part of determining support.
It really depends on the state. In many states you can have it re-evaluated every 18 months, or every year. It just depends on the local laws.
Is the whole no mortgage think something you all just suspect, or is this something that you no for 100% certain she does not have and is in no way responsible for paying? I would think that if you are 100% and proof can be provided to substantiate your claims, that it would be able to be reevaluated based on the fact that originally it was calculated using fraudulent information. But who knows.