I think so too, after revealing her house in Ayu Life Photobook, she just wanted to move to a new place and more private. Knowing Ayu being all vague I wont be surprise if it is true so.
Oricon News :
http://www.oricon.co.jp/news/2093515/
Can someone translate? It said something "ayu is angry about the "cant afford and move to a new place"??