How Much Hassle Will It Be If My Aunt Fraudulently Claims Me As A Dependent On Her Taxes?

Throwaway, because I'm once again embarrassed by my family.

Yesterday, my mother casually told me that she'd given my SSN to my aunt so she could claim me as a dependent on her taxes.

I am married, in my 40s, I live in a different state, I have a full-time job, and a mortgage. I have never lived with my aunt. This isn't a mistake, this would be fraud. I told my mother that I absolutely refuse to allow this, and she seems to think it doesn't matter what I want.

I texted my aunt- who I'm barely on speaking terms with because of politics and a stupid stunt she pulled at a funeral last month- that she absolutely could not do this, and I got back some bullshit about how family helps each other even when they're fighting, and how my brother explained this all to her.

According to something my dipshit brother probably misunderstood on TikTok, people who never had kids can claim a related family member as a dependent once they hit 75. There was also some nonsense about New Hampshire not having income taxes, so the IRS wouldn't check? I'm not sure if I have to worry about my brother going full into SovCit nonsense land, but that's not my immediate problem.

I know that the answer is normally to file first, but we have a complicated tax situation this year with my husband cashing out some stock options and me doing some 1099 work on the side, so I'll owe the government money, and I don't even have an appointment with my accountant until late Feb.

What happens if I wash my hands of this and let my aunt get her tax advice from H.R Blockhead? Is there any chance that I could get into some hot water for this or owe any penalties or fees? I texted her so I had a record that she is not doing this with my consent.

If you're hearing the theme song to the Beverly Hillbillies right now, keep in mind, this is all happening in New Hampshire.