What she did is called a "false strike"...garters do it all the time...it is a defense mechanism of theirs. Most of the time, garters do not actually want to bite, as they are not normally aggressive by nature...so when they are frightened or upset...they do the false strike. Cee Cee does it all the time. I have a grape vine in Cee Cee's enclosure too and she loves it....she lies in it all the time. Beauty may be in the eye of the beholder...but anyone who doesn't see how lovely Zena is must be blind!