Needless to say, there wasn't much at first for Senna to do. Following closely behind Alexander, she stayed back as he went forward to challenge the gelatinous mass, and circled the entity from a distance as the rest of the party went about implementing their battle strategy. She couldn't tell at this phase whether it was failing or succeeding, but whatever was going on, it seemed a little intense. 

Her eyes were always on the Mass. Whatever it did, she would notice, and be able to react far before she could be threatened lethally. She hoped, at least. These labyrinth monsters seemed quite strong, for how weak they may have been compared to Blessed Humans. She was certain that, had she faced a Goblin prior to receiving her blessing, she would have certainly been killed.

Eyeing the suddenly departing slimes from a distance, she raises her bow and, seeing Alexander move to strike down one of them, whistles in the direction of Vincent before loosing an arrow in his direction. She was quick on the target, and had aimed for the three-quarter point of the slime's mid-air trajectory in order to hit it just before it landed. Naturally, she accounted for her improved strength and what she had judged of her bow's draw strength. Hopefully, given her warning and the fact that he was aware of her existence, Vincent would infer that he was to not get hit by the arrow flying towards him.

While her concentration was momentarily centered on the act of firing the arrow, Senna would quickly return to a state of alertness, preparing to protect herself from any attacks aimed at her while she was vulnerable. At the same time, she continues circling the slime mass at the centre of the room, attempting to get around it and examine what could be found on the opposite end of the room. If not possible, she would simply keep her distance, bow raised and ready to provide support to her allies.