Depending on your budget I have a few ideas. I have experience with three systems. On a regular basis I use an Eschenbach Smartlux Digital. It's alright, although I'm not so thrilled with the construction and I had to warranty return it a few months ago to get a new one after the battery failed. It's $600 USD plus depending on where you look. I've had limited experience with the Freedom Scientific Ruby XL and I really liked it, but Freedom Scientific products are typically quite expensive. I don't own one but I want one.

 

I also own an Enhanced Vision Davinci, which is also alright. It usually runs between $2,500 USD and $3,000 USD. I got mine through an organization and I'm grateful for it, but if you are spending your own money I would really look through your options. I have problems with it struggling to pick up text sometimes depending on the ambient light. The OCR was an exciting prospect for me but it turned out to not be very effective and I don't bother with it anymore.

 

The last option that I have some experience with is called the Magnalink, I think it's made by a company called LVI. I don't use it, my brother who is also visually impaired does. It also runs close to $3,000 USD. From what I've experienced it's a really nice option, it can fold and packs into a laptop bag sized case and it has a battery so it doesn't have to be plugged in all the time. I don't think she would have much luck using it on her lap though, it really needs a stable surface because while portable, it's kind of heavy.

 

I would really look into the Ruby XL if portability is desired, that's a great option.

I have a Ruby XL. It's really great for me. However, I am not sure exactly the budget you guys have.