I tried all sorts of products like 'Backfriend' in the past because I have to sit for long periods at a keyboard. I agree, Honda seats are not the best and they don't seem to have heard about lumbar support. A 'Backfriend' and a more reclined backrest may do the job by spreading more of her weight into the backrest rather than the base of her spine. I wrote a feature 20 years ago with Professor Mark Porter the Ergonomist and he confirmed that sitting upright in a car is the worst thing you can do.