leaving home and dog

Question
I am getting married in October of this year and as of now I rent a room from my mom and she owns a pug.  He is 7 years old and I have known him all his life.  To put it mildly he is more my dog than hers.  He is more attached to me.  At any rate, I am concerned about what will happen to Theo emotionally/psychologically to Theo when I move away.  He is used to sleeping with me or my mom, but a lot lately he has preferred me.  My mom thinks he should be forced to stay in her room at night, so he will get used to it when I move away.  Plus it hurts her feelings that he prefers me more.  She thinks I should not let the dog out of her room at night no matter how much he scratches at her door.  How should my mom handle this or this ok to do with Theo and what should be expected after I move out?

Answer
Well what you can do,is have your mother spend a little bit more time with him everyday,and also have her take him for walks and feed him-just have her spend a little more time with him,you don't want to do everything at once

And after a few weeks,you try shutting him in her room at night,and also just a few weeks before moving out,try to ignore him if he comes to you,have your mother call him and give him treats

This doesn't mean you can't play with him or spend time with him,but it is also important that he bonds with your mother