Last year I made 38 quilts that were 54" x 78" in less than 2 months so I will say yes it's doable, but I've been sewing for well over 40 years and know my way around a sewing machine. Even though I just started learning the quilting basics in the past 3 or 4 years my previous experience with sewing helped out a lot.
I also did mine with some very cost effective short cuts and I DO NOT quilt my tops, I tie them which is so much faster when you use the cheap blankets ($5 each) as batting instead of the $15 - $25 or more batting that most quilters use. It works great and is very warm as well. You don't have to tie every 4 to 6 inches either, I usually ties at the block corners only which is any where between 8 and 12 inches. I know a lot of "real quilters" here are throwing stuff at me by now but when you are on a budget and still want to do something that will help keep these people warm & last under rough treatment then you have to do what you have to do. My daughter has one of my quilts that I made this way and she washes it almost every week, no special treatment just throws it in the washer with what ever else she has that will fit and keeps on going and YES she does throw it in the dry on normal high heat, same as jeans. It still looks pretty good except for the fading of the fabrics. She has had this quilt for almost 2 years. Personally I was shocked that it's held up so well with all she puts it through. But the point is, if these are for people that have nothing, will be dragging it around all over the place, will wash them in what ever manner they can if they can, then these quilts will work, look good and keep them warm without all the extra cost.
SO, with all that being said, I will say if she has the supplies to work with and keeps the patterns fairly simple, she will have no trouble with making them.