OCD treatment center (11 years old) 

Me and my mom have always been super close plus she's a psychologist so she knows me a little to well. Anyways what's worked for me is writing down what I want to say. I useally go over it a few times in my head. Then I'll ask if I can speak with her privately. I figured out what works for me through trial and error so it's just depends on you and what you feel comfortable with. :) I hope this helps!