Now, you can allay her anxiety, or she's going to have to deal with it on her own and probably come to the wrong conclusion. If that doesn't bother you and you can clear that up after the day is done...that might be one choice you might make.
This is the route I chose...I waited until before my exam and just sent a simple response:
Me: Work, Bible Study, worked on some notes and last minute studying. Busy day! Just now took a moment to breathe before my exam. Here goes nothing!
I came out of my exam and she'd responded: "You got this!"
mid 20s Tgther 7 yrs W EA 04/12/11 PA 04/23/11 W filed 05/11/11 I moved out 08/05/11 Mediation mid Oct 11 D final Dec 11 Now what? ...2012