Nah Peaches, adults can get regular chicken pox that aren't shingles...if they haven't had them as a child (which obviously Lindsay didn't). On rare occasions you can get them even if you have had them before, if the first time you had them it was a mild dose that didn't properly fire off your immune system.
Shingles are another thing altogether, usually seen in adults who have had chicken pox as children. Different rash, and extremely painful, as it strikes along the nerve pathways, rather than on the skin surface like chicken pox does.
Good luck Lindsay...and hang in there Leisa.