Isabel, i read a blog post recently that would be perfect for that student to read, on having to erase one's romantic or sexual partners if one is "in the closet":
The Invisible Person. (Trigger warning on some of the other posts on that blog; the blogger writes a great deal about BDSM, so people may want to be careful there if that tends to be triggering for 'em. Also be aware that she has a more lax commenting policy than a lot of progressive blogs out there.) I'm sure you have heaps of great teaching resources already but I figure throwing one more resource out there for general use can't hurt, especially because of the wonderful plain language in which Holly writes, which makes her writing perfect for sending to people who still find a lot of activist or academic jargon more intimidating or difficult to absorb.