Laughs with my sister

I constantly make jokes about and make light of my sisters disability. Its the only way I can relay it to others, without breaking down and crying my eyes out. Its been a very traumatic time in our families life, and my only coping mechanism would be to make jokes. My sister doesn't mind that, well at least I don't think she minds. None of the jokes are derogatory to her, they are just funny. I had the most amazing time with my sister here this weekend. She is an amazing woman and has done amazing stuff, and I have to bring her back to earth every now and then by joking about her disability, but I love her sooooo much