6 yrs ago I opened a specialized school in which I was main owner. I am knowledgable in this particular area (Other member is not), & brought a business plan & expertise into the LLC. A family member invested/loaned $300,000 to help with the initial start up & in return received 1/5 of business ownership.She is still working in the business, refuses to leave, & says she cannot trust me & that she needs to stay to protect her investment. The business is barely profitable & still in debt, though being pd off.Our relationship has become hostile & there are constant power struggles. I either want out or for her to withdraw. How do I get out? I am afraid, because threats of suing me have come up if I leave or start another business on my own. How do I proceed? We have no operating agreement.