Consider the Fictional facts...
There is a tickling story that talked about Lita and Trish kidnapping and tickling Stephanie for a full week period, therefore based on that (fictional)fact perhaps its a simple matter of Stephanie finally getting a little revenge and making sure she's not in that position again...but then again maybe now the Trish knows how ticklish she is, she presses her advantage.
Doh, I dunno it's a hard decision for me😉