As a speech-language pathologist I feel the need to say that adult-onset stuttering is typically not "developmental" stuttering (as in the condition most people in this sub have). Adult-onset stuttering may be neurogenic stuttering or psychogenic stuttering. However, these are quite rare (especially psychogenic stuttering). I have no idea what is causing you to stutter but given what I know about stuttering (which is substantial) I think you need to go see a medical professional. I'm not meaning to scare you, but speech changes can be a sign of a host of neurological conditions. You need to rule out any of these more serious conditions. Go see your physician, explain to him the situation. She/He may recommend seeing a speech pathologist (I recommend this) and depending on the circumstances may recommend a neurological consult or a psychological consult. It's probably nothing, but it's better to rule things out. I'm not surprised talking with your elder isn't producing change -- this is a physical / psychological thing. It's not spiritual (but take that with a grain of salt, I'm not religious, so it might be my bias).