I know people find this really frustrating, but I actually really enjoyed this fight in the novel. The adaptation hasn't done it many favours - the artist isn't great at illustrating dynamic action, and her thread tricks looked especially feeble - but as a way of showing how badly she overestimates her new body, and how she's still really bad at dealing with hostage situations (it's literally what got her killed the first time around, lmao) I genuinely liked it a lot.
It sets a kind of tension and threat level that a lot of isekai series badly lack, and demonstrates that her cheat skills can get her into more trouble than she can reasonably deal with, if she lets herself get overconfident. She's skilled, but she's still a child, and an especially feeble one at that. It's good! Exciting stuff!
I mean. I thought it was exciting. Up until the deus ex machina resolution, that is. Boy, if you guys thought this fight was frustrating and pointless before...