"No, no, no," Miller told ET's Nischelle Turner when asked if she was prepared to serve time, wiping away tears. "My attorneys in Pittsburgh have hired someone that prepares you -- that mentally, physically prepares you."
"I'm not a real physical person so... you know... we'll see," she added. "There's no sense. People ask me, 'Aren't you worried, aren't you this, aren't you that?' I can't think about it. I have to live every day."
Though Miller admitted to the emotional strain her criminal case has put on her.
"I just don't want to fight anymore, I have, like, this much fight in me left," she cried. "I don't want to do it anymore, just save my tears for the pillow."
In October 2015, Miller was accused of illegally trying to hide $775,000 worth of income from Dance Moms and the Lifetime show's spin-off projects when she filed for Chapter 11. At the time, she pleaded not guilty.
Miller was later charged with 20 counts of bankruptcy fraud, concealing assets, and one criminal count involving international monetary information. Last June, she pleaded guilty to one count of failing to report more than $10,000 worth of U.S. dollars' worth of Australian currency she brought into the U.S., and one count of bankruptcy fraud. Judge Terrence McVerry said at the time that if convicted of the charges, Miller could face fines of up to $500,000 and a maximum of six to 10 years in prison.
Although the reality star said she planned "to take responsibility for her mistakes" in a statement to ET last June regarding the criminal charges, Miller told ET on Wednesday that she doesn't believe jail is a fair punishment for her.
"Well, like I teach my kids, life is not fair," she said. "In the end, I have to believe that everything will work out and the truth will come out -- I think there's a lot more to it. There's a lot more moving parts to this case than anyone understands."
"I think people wanna cover their butts and they're out for themselves and that's it," she added when asked if her criminal case has aided in the the tumultuous relationship between her and the Dance Moms cast and producers.
Still, Miller insisted that her upcoming sentencing was not the reason why she abruptly quit the series.
"No, absolutely not, let's make that clear -- absolutely not," she stressed. "I chose to quit because I don't want to fight for a great idea, I don't want to fight for better music, I don't want to fight for a bigger costume budget."
"Wait until [new Dance Moms choreographer] Cheryl Burke deals with that," she also quipped.