I wonder what country the instructions were made in that damp sloths are common . <| sep |> First , laywer up . Second do you have guardian of the person ? or just guardian of property ? Or both ? If you are guardian of the person you have legal right to decide who your sister is allowed to socialize with . You can , legally , bar your parents from speaking to your sister without you being present or form seeing her at all at all if you so wish see a lawyer about this to get the documents in order . Your parents attempting to speak with your sister behind your back is probably a first step to legally challenging your guardianship . They might see if they can try and trick your sister into saying something bad about you behind your back that can be used against you , or worse or get her to sign a legal document where she requests a new guardian . A ward can request a new guardian at any time , for any reason , and the courts will take the request VERY seriously . In the states I know of , anyone can challenge a person ' s guardianship , even if they ' re not related , and the courts have to take complaints like that seriously . If your parents file complaints against you , or challenge your guardianship , be prepared for a court hearing . You should see if you can dig up court on why the courts refused to grant your parents guardianship , or at least have those court documents handy . Carefully document the improvements that your sibling has experienced since you ' ve stepped in to as guardian medical records , job history , extracurricular activities related to quality of life . Keep your nose clean and your accounting impeccable . These are usually the easiest place to make mistakes in guardianship , and often the first weak places an opponent looking to seize guardianship might attack . I ' m getting a bad feeling about your parents and I agree with the poster that mentioned they were looking to collect her SSDI and let her rot in a corner for the rest of her life . There is no other rational explanation for their behavior . It is not jealousy or embarrassment , they are trying to sabotage a good thing for your sister for their own personal gain .