August 25, 2016 04:00 PM

Frances Bean Cobain‘s soon-to-be ex-husband is asking for some serious cash in the divorce settlement.

According to documents obtained by PEOPLE, Isaiah Silva has requested Cobain pay him $25,000 a month (or $300,000 a year) in spousal support. A former musician in a band called the Eeries, the 31-year-old claims that he put his career on hold and abandoned steady employment after marrying Cobain in June 2014.

While no prenuptial agreement has surfaced, he maintains that Cobain promised to pay for private school and housing bills for his 7-year-old daughter from a previous relationship. Now he says Cobain is “abandoning” them, leaving him too broke to care for his child. A hearing has been set for Sept. 7.

In addition to the spousal support he also has his eye on the estate of Cobain’s late father, rock legend Kurt Cobain – valued at upwards of $450 million. However, a source close to the situation tells PEOPLE that Cobain and her mother Courtney Love aren’t concerned by the cash grab.

“Isaiah has no money and is trying his luck and will get nothing,” says the source. “Courtney doesn’t like him at all and isn’t bothered by this. She’s just happy that Frances is so much happier now and is looking healthier than she has in years.”

Courtney Love and Frances Bean Cobain
Dave Benett/Getty

VIDEO: Frances Bean Cobain Files for Divorce from Husband Isaiah Silva

An unexpected upside of the break-up was that it brought mother and daughter closer together. Despite their public differences in the past, the source previously told PEOPLE that their bond is stronger than ever.

“They’re on really great terms at the moment,” the source revealed at the time. “Courtney wants the best for Frances and is hoping this will be a clean and straightforward divorce process.”

She’s definitely not letting the drama get her down. Cobain recently celebrated her 24th birthday in Las Vegas, where she traveled in style on a private jet.

She even had time to take in a Britney Spears concert.

Cobain first split from Silva back in March, citing irreconcilable differences. They had been together for five years.

With reporting by GEORGE STARK

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