Great pictures from redEva (particularly the second!)!

To get back to Bruce Boxer's question, healing time can vary a LOT in piercing, depending on how fast the sub usually heals from other things, whether or not there's an infection (which could set you back a month or more, or convince you to let the piercing close up and try again later), the location being pierced (nipples tend to take longer than labia, for instance), the time, temperature and what's on television that night. In other words, the first time a sub gets pierced, there's really no way of knowing how long the healing will take. For nipples, a rule of thumb would be half again to twice as long as it took her earlobes to heal when she had them pierced.

Two things that can (somewhat) speed the healing process are: regular applications of Neosporin to the site (unless she's allergic to it, which is possible), and; keeping the site covered. Some people think that letting a wound "breath" speeds healing. Specifically for nipple piercings, this is not the case. The most important considerations are to keep the wound clean (preventing infection) and to prevent irritating friction (which would seem to mean keeping her away from BDSM Tourguide!). I know, irritating friction is one of the main reasons for infibulating, but not until the healing is complete, please.

There is an enormous amount of literature available on this subject, Mr. Boxer. It shouldn't be at all hard to find enough to thoroughly confuse you.