Debbie Rowe -- the woman who gave birth to two of Michael Jackson's children -- has filed legal papers saying she SUPPORTS the new joint guardianship arrangement ... but is warning TJ and Katherine that she WILL intervene if things don't work out.
Rowe filed the documents in L.A. County Superior Court today ... saying she has reviewed the co-guardianship application and signed off on the deal reached between TJ and Katherine to share parenting responsibilities for Paris, Blanket and Prince.
But in the docs, Debbie warns ... "Should the arrangement sought by TJ Jackson and Katherine Jackson become untenable, unstable, unsafe, or in any way contrary to the best interests of the children, Ms. Rowe will seek court intervention."
Rowe claims her concern is for the health, safety and well-being of HER children; and says she will continue to ensure their needs are met.
Remember, when TJ first petitioned for guardianship, the judge said that Debbie must be notified.