In the cave, about halfway down the slope that led to the fruit's alcove, Selena was having a whole other set of problems.
The cavern tunnel wasn't much in terms of width or height, so she didn't have as many enemies swarming her simultaneously. But the frenzied monsters were starting to pile up behind the first row, and slowly but surely, the pile was pushing her down the slope.
Luckily for her, even though unbeknownst, Leon had taken a heavy burden off her shoulders by taunting the monsters outside. He may not grab all their attention, but he was lessening the speed at which she was being driven down.
But Selena was built more for speed than power in her current human form, and if she tried changing into her tiger form, she would no longer be able to handle the horde.
Her size would keep her from being as mobile as she was now, and she would quickly start letting enemies through.