Re: How would you sever a Vampiric link?
It's VERY difficult, and I'd advise that you have someone help you with this, but here's the general idea.
A: You can agree (both of you) to sever the link, which is by far the easiest but sometimes not feasible.
B: Shield yourself heavily, from everything, for about a month. This takes concentration, and lots of it, to keep the shield up and actively filtering for any psionic disturbances. After a time, the link will fade and you can resume life as usual.