The normally wary fox can't figure out why she's feeling the need to finish grow on her so much...was it the place?  Were her instincts trying to get her out?  And now she can feel her stomach's want for food even more.  She's been particularly hungry since spitting out that lizard, but now it's starting to get worse...  With the heat as well as the other two driving factors - and the lack of traps that she can spot - she moves at a more hurried pace towards the altar.  Once Synys arrives there she looks around more carefully, still not wanting to miss anything and end up needing to return.