well my man,probably we cannot call it needs...it's ladies' weakness.some ladies tend to release thein tensions throught some items. it's the same as when ladies are depressed they just go out and do the shopping galore.

it's probably one of her way/s to be relief or is she is bored?you can talk to her and ask her if there's something wrong or if there something she feels like to do. in order for her to divert her habit? get her into sports or any activities...that will make her more productive and active...