My Name Is Memory question

I loved this book despite the slow start. The story of Daniels history with Lucy, Constance, Sofia was moving and intriguing. It took a long time for the two to reunite in the present (almost to the point where I gave up hope) but it finally happened and it paid off really well but just when it was getting exciting we're left in the lurch. The promised sequel has been put on hold because of lacklustre sales. Is there anyone else out there who is longing to know where this story leads?

.....So now it's August 2015 and every now and then, when I'm looking for something new to read I check out Brashares' site to see if there's any news re the sequels and there never is. I've checked her Facebook page too and although there are plenty of enquiries, Brashares' hasn't even had the courtesy to reply as far as I can see.

Now I'm wondering if the hold up is due to a legality. Some reviewers have highlighted similarities to a book called 'Fallen'. Could it be a plagiarism issue? 'Fallen' was published a year before MNIM, both authors live in NY (or at least did at the time) and Brashares worked as an editor briefly so it's possible the 'Fallen' manuscript crossed her desk. From all accounts (I haven't read Fallen) the similarities begin and end with the main characters identical names. A secondary issue being a grey area around the idea of reincarnation versus immortality (providing both male protagonists with very long memories).
Now before you all jump to conclusions I might add that publication dates prove nothing in terms of origin of concept. From what I've read in the forums, MNIM is a much more sophisticated read than 'Fallen' and a well written story will always take longer to write than a simple one so don't assume Brashares is the culprit here just because her story was published later. I'm keeping an open mind and I could be way off the mark anyway.

Another theory is that she's unhappy with her publisher and is waiting until her contract ends so she can publish under a new label?
She's still writing. I've just finished 'The Here and Now', a far inferior book in my opinion, and that still managed to get picked up, albeit by a different publisher. Anne Brashares, what is going on? Please have the decency to let your fans know one way or the other!!!