POLL : Is this a bad sign?

okay so ive been seeing this girl since 8 weeks, we arent dating but hanging out and texting.....we have been texting more than seeing each other but we were both extremely busy anyways.....point is...since sunday when she last texted me with "kisses" at the end of the text, we have texted once and she wrote back "take care" in stead of kisses.........NOW i know she remebers A LOT of things about me, she even noticed i changed colognes from the one I wore when we first met, but is it possible that girls can forget to write kisses?? also, since sunday's text and the one i got yesterday, she DIDNT ask how I was doing? THAT IS VERY unusual of her (although in my last text to her i didnt ask how she was doing)...........I know she had exams and presentations this week and her mom arrived to visit her in town but the fact that she didnt mention kisses or ask me how im doing is that a bad sign or forget??