Skylar easily noticed how Erion seemed to act as he answered her request to help Mettaton. Did he know about what just happened? She would have to ask him later. She looked to Sans when he made his comment about the Temmie. She felt a light sweat bead at her forehead. Did Sans know as well? And if so, why did she have this sense of dread? Evidently, Sans turned his attention to Papyrus and answered his question. Then Sans made that comment about Frisk falling to the Underground again. She answered him, and Asgore after he asked his question, "I haven't seen Frisk...but I think the bats over here may have. They said that someone didn't want to be found. They may have been talking about Frisk," 

As she mentioned the bats that were just hanging from the nearby branch, she pointed at them with her thumb. She was about to go and talk to the bats, but then the Infernal Flower spoke and insulted Asgore. She was glad to see that the insults didn't even faze the King. She narrowed her gaze at Flowey as he spoke to her. She smirked a bit at the comeback she had in mind, before she crossed her arms and she answered, "Firstly, I'm their sister. Secondly, you should know the answer already, since Frisk isn't the one who has to eat fertilizer like a certain flower," Sans raised his hand towards Skylar and Skylar gave him a high five without missing a beat.

She looked to see a boss monster appear from her hiding spot. After she apologized, Skylar answered "It's alright, don't worry about it. I'm Skylar," When she talked about Flowey, Skylar answered "I wouldn't call him an Echo Flower. Be careful of him," She had no idea as to why Frisk brought the hellish flower up, and every time she asked Frisk, they would never say. She then went over to the bats and see if the bats would tell her whether they saw Frisk or not and where they went.

After talking to the bats for a few minutes, they finally told her that Frisk had gone to the Underground again. They also warned her that there were still malicious monsters in the Underground. After she was done talking to them, she went back to the rest of the group and informed them, "Sans was right...Frisk went to the Underground. I'm going to go look for them...but, I may need help with getting there and back..." She knew better than to just go and jump down a hole...