I'm planning on marrying Sylgja from shor's stone soon, so can i move her into my house? will she still go back to redbelly mine in shor's stone to work or stay at the house?

there's a bug where spiders respawn in the mine where she normally works and kills the miners

You would think she would act as a spouse and sit around in the house working at that store she said she opened and have 100 gold a day for you.

I know when I married her I moved her to breezehome... so I don't know if she will keep to her old pathing and work the mine and what not.

I do know when one of my characters married Ysolda and we lived in her house, I'd find her walking the marketplace.

I think the general rule is that if you move into their house, they continue with their normal pre-marriage routine. If they move into your house, they open a shop there and don't leave.