10/11/2012 09:47 am ET

Lindsay Lohan Mother: Actress Lent Dina Lohan $40,000

That nasty fight Lindsay Lohan got into with her mother Wednesday? Sources are confirming that it was over a $40,000 loan Lindsay made to her mother. TMZ has obtained court documents that show JPMorgan Chase Bank threatened to foreclose on Dina's Long Island house after she neglected to make several payments. The website claims that Lindsay then lent her mother the sum to help her out -- and also other money "to help pay for her kid brother's tuition."

If the reports are true, it wouldn't be terribly surprising. Lindsay saw a hefty paycheck in 2011, when she made $1 million to pose nude in Playboy magazine as Marilyn Monroe.