While she is strugling to get free spit that-o-so-many-times-used toxic on her. If she still isn't free lets have some fun. Hit her hard with horn drill, it shouldn't be to hard to hit a trapped enemy and finish with skull bash.
When she get's free use water pulse and if you still have a move left use T-bolt

toxic~horndrill/water pulse~skull bash/water pulse/T-bolt