I can't seem to get the Ysolda quest to activate, I've got his huge mammoth bone sticking out of my pocket ready to give it to Ysolda but the options are not there, how do I activate this quest?

*dang, I've forgotten what my other question was.

just remembered it, Can I improve a crossbow?

Also, how do I get rid of the two Draugr lovers sleeping together outside my Hearthfire home? I've tried moving them away but they keep returning to sleep together, its frightening the horses.

Yes, you can improve a crossbow.

Oh really? Easy there big fella...