First off she should think of getting it published. Tell her not to go and Google for publishing companies. Usually, those are scams. They are self-publishers seeking for customers, charging them thousands of dollars to read your manuscript, edit and get it critiqued, too. Tell your mother to go on AAR, Association of Author Representatives. http://aaronline.org/find They list thousands of literary agents, to solicit your work to get it published to companies like HarperCollins and Scholastic, Inc. A literary agent is an agent who represents writers and their written works to publishers, theatrical producers and film producers and assists in the sale and deal negotiation of the same. Literary agents most often represent novelists, screenwriters and major non-fiction writers. Your mother must write something called a query to them. A query letter is a formal letter sent to magazine editors, literary agents and sometimes publishing houses or companies. Writers write query letters to propose writing ideas. http://www.charlottedillon.com/query.html shows you good examples of query letters, and how to write one. Publishing is a long process. If your mother is anxious there are self-publishers like Lulu, Blurb and CreateSpace that charge no money at all, but it's rare you hear about successful books (like the Harry Potter Series and Twilight Saga) Before your mother does all that she should revise her book multiple times, get it critiqued by others, and write a pretty decent query letter, when she feels comfortable she can send it to the agents. Agents usually take weeks to months to reply to query letters, they usually get thousands of submissions and they have to review every single one deciding rejection (all famous authors I'm sure, have gotten an rejection letter once in their lives) or success in your literature. Agents should not cost money at all (When looking at agents, be sure they are authentic, and look at books they published in the past. Has your mother heard of them? Has she read them? Are these award-winning books on the bestseller list? Be curious and don't be afraid to ask questions.) All real, actual agents that don't charge are listed on AAR. When the book is published and begin to sell, they get 15% of your revenue. I would like to read your mother's book when it gets published (someday). Don't compare your mother's great talent with Twilight. I'm sure it'd be very successful. Everyone loves Twilight for all the wrong reasons (example: "I like Twilight because Edward is so hot!") Plus, like someone else has mentioned, it is very rare you can find something as such, that'll reach that high of a status. Just a few tips from what I know and recommend for you to do. I think your mother has her own part of being the author, doing some serious research. It took me a few years to find about all of this information (I know more, but I am just answering your question) from when I was 9 (at that age I fell in love with writing, and began doing plenty of research. I know for sure I want to be an author when I am older) to present day, at the age of 13, I self-published quite some books and I already experienced a rejection letter, though I am still working on my skills and a simple letter will not stop me, and I am in advanced writing classes and I also took the SATs and scored high so I go to a college in Maryland for camp in the summer.
(P.S. Is your mother...Marlene Mascoll? According to Amazon.com it says it was published by PublishAmerica. Been there done that. That is a scam. One of those self-publishers you find on Google, when the publisher gets all the money and the author hardly even gets an revenue. Tell your mother about all the advice these people were kindly enough to tell on this website. I'm sure she'll open her eyes, and take some time to do a bit more research. I found it on http://www.amazon.com/Running-My-Way-Back-Home/dp/1413761836/ref=sr_1_2?ie=UTF8&s=books&qid=1283115306&sr=8-2