As her vines were not doing well against the corrosive power of the snake, Beel started using different methods. Her main method of fighting was definitely the plants but that did not mean that was her only means of fighting.
The ability to summon powerful vines was a racial skill of hers. She had mastered this skill throughout her long life and had became a powerhouse. But other than that, she was also quite high talent for using magic. But with her extremely high affinity with plants, her affinities for various destructive elements were very bad. The only elements she was good with were water and earth. But unfortunately both of these elements were not attack focused and Beel was an aggressive fighter.
So to maximize her strength, most of the spell that she had mastered were spells that gave various useful boosts to her vines. So her choice of attacks in a situation like this where her vines were useless was very limited.
