Need clothes for neighbor in size 6x

have a neighbor lady who is just my age and is fast approaching around 600 pounds. She recently lost her funding for home health care and housekeeping and can no longer do these things for herself. She has asked me to help her with grocery shopping and laundry. Last night I went to the laundramat for her and I was almost in tears as I folded her clothes and those of her mentally retarded brother she cares for. They were stained and tattered. I felt so badly for her. I noticed that her clothes are a size 6x and he wears size 56 jeans and 3 x mens tops. IF anyone would happen to have access or have decent clothes in any of these sizes I would be so greatful. I want to help this family out in any way I can. I feel so badly for this young lady that she is going to die an early death and wls could save her life. I just dont know how to approach the subject with her, or even if it is my place to do so. I just love and care about her and would love to see her have a better quality of life. She is completely housebound now at 44 years of age. Any ideas how I can help her and her brother, without being a nosy busybody... HELP.. Love and Hugs, Laura