Using The Wife's IRA for funding? Can my LLC make a profit from?

[Bret N.]

My wife has a self-directed IRA through Equity Trust that she transferred over to several years ago. These are funds from an old account she had from a job she had years ago prior to us getting married. Is it okay to use these funds via ET to invest in my LLC for purchasing a property? Like other investors of which I use IRA's for my PLing , there is a prom note and mortgage declaring her % per annum and when the house sells it rolls back into her account Does this conflict since we are married and my LLC makes a profit? What are tax implications?