11 months is not too old for Zoey not to have had a season. You really shouldn't be concerned for another 9 - 12 months so plenty of time.
It may be that she is sexually maturing at the moment and that could be a factor in her current behaviour.
If Zoey is actually choosing to toilet on your bed, rather than it being a medical problem where she really doesn't have control of her bladder and bowels, then I can help.

Zoey is feeling confused and anxious about her role in life. This type of behaviour is reaction to her emotional stress and is not something she does to upset you in any way - it is her way of trying to make herself feel better.

Here is a guess.....She sleeps in the bed with you doesn't she? If not then she is allowed on the bed during the day?

Now how to stop it - what you have to do is take away the stress and anxiety that Zoey is living with at the moment.
She needs you to take on the role of a confident and secure leader and that will allow her to feel secure and safe. At the moment she doesn't see you as a competent leader and so is trying to take on that responsibility herself.
She is not very good at it and she knows it. This means that the pack will fall apart at the seams and all the members are in mortal peril (in her eyes anyway)!!!!! As the reluctant leader it is her job to keep everyone together and disciplined, make decisions on moving, hunting, sleeping, defending the territory, the pack structure, who is in and who's not etc. etc. etc. That is tough enough for a dominant dog with only other dogs to cope with. When most of the pack speak a different language it is hopeless! On top of that they keep getting lost! They just go out trapping her inside and leaving her to worry how on Earth they will survive without the leader there to protect them!! When they come back they greet her as though she is the leader, making a big fuss of her and before she has time to make the next decision someone else has got lost!! In this state of constant anxiety she does the only thing she can and puts all her efforts into making the den as safe as possible by marking, marking and marking again (she doesn't see it as a disgusting mess on your bed but as a very strong warning to anyone that might threaten her pack to back off and to you that the den is as safe as she can make it).

Once you understand the reason for the behaviour it is a lot easier to handle and cope with.
You have to take control of the pack and take responsibility off Zoey - she doesn't want it anyway! To do this you must behave in a way that will convince her that you are a worthy leader and that she can trust you to keep the pack safe.
Here is a list to save a little time and space-

Don't allow her on the beds.
Don't leave food down for her - feed her, give her fifteen minutes to eat and then pick up the food until the next meal time.
Don't pay any attention to her at all if she comes to you asking for a fuss - it will only make her feel worse in the long run!
Don't pay her any attention when you come into a room where she is, not even looking at her.
Wait for her to lie down away from you for at least five minutes (time it on a clock!) before you call her over for a fuss.
Get the whole family to do the same ALL the time.
Shut bedroom doors when you are not there.
Even if she is trying very hard to get your attention pretend she is not there, keep your heart rate as low as you can and avoid eye contact.


If you can do these things - and it sounds easier than it really is, especially at first - you will see a change in two to three days. You must keep it up and be strict with yourselves!

Good luck - let me know how you get on!