What would you do?

My mom also has a feeding tube thatwas actually put in by mistake not suppose to be there ,Did not know until I read her will but thats been while ago anyways long time ago Hospice told me her body would eventually reject it I do not use much only for water and meds so it hasntbeen acting right for awhile now when i go to use it my mom always does something with hands as im using it which she knows irriataes me to death last night as thatwas going on she starts laughing at me i got so upset cuz all i havs done for her i dont think anything is funny about my situtation ive given her13 yrs of my life to take care of her and now i feel sick towards her plz someone erite me back to tell me whawhat wld you feel . Thank you