I hope a few days away has done you some good. I don't think it will take long for the decision about what to do with all her stuff will be made, b/c I think she will do something to screw up. I don't think she is ready to come back home and be the W she needs to be. But, if she doesn't do anything to mess up and still "talks" as though she is planning to return, I think that is the time to tell her how you feel about it. Tell her you've had time to think things through more clearly and that you do not feel that she should return with the circumstances being under the strain that they are presently and that more counseling is needed before that step is made. In the meantime, a temporary storage building must be rented out...or she will have to make other arrangements to put her and OM's things, but that you will not continue to house it for her.
IMHO, she takes you for granted. She thought you would be tickled pink to have her back the second she had a spat with OM and sounded like to me that it wasn't even discussed but that she just assumed that she would move back in with you. I may have misunderstood that part of the stitch. However, you have a right to decide what is moved into your home and what is not. I would be honest and tell her that IF she does come back to your house that nothing the two of them collected as a "couple" would be allowed into the home. That is not fair for her to even consider it and that is one reason it sounds like she takes you for granted. She is not being sensitive to your feelings at all. Plus, why is she prolonging the actual moving back in with you? A dog? Please! Now, you hold second place to a dog? Sorry.....don't buy it. But, as has been said, she needs a lot of counseling.
One thing for certain.....if you are not very, very sure about your feelings....of wheather or not you are ready for her to come home...if at all.....Sweetie, don't do it. It won't work.
Let me hear how you are doing.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!