Double Trouble

im 21 yrs old n i have been battling my weight ever since the 3rd grade. Now that im older and had chances to change the things in my life. I realize that the lack of motvation i have to completely lose the weight i have is due to the fact that im not jus worried about my self. My mom, 58 this yr; has me worried more than anything. we have long talks about fixin our life n makin everything better, but im afraid its just falls on deaf ears. My mom is over 350lbs if we didnt have an elevatoer to go to our 3rd floor apartment then she would never leave. i tried changin up on foods but now shes a diabetic! i feel as if i dont even want to try any more her lack of wantin to survive is havein a serious effect on me. I jus want my mom to be there to walk me down the asle when i get married or even see her second grandchild. i jus think she's given up on her self. she needs a kick in the face to show her how she's living and how she could change. im willing to do anything to help her and my self get back on track n to live a long healthy life together. Please help me save my moms life! i'll do anything