Thank you for taking the time to report this, as V1 has released as an e-book the pre-pubs are now out of date, and as such any errors found in them will not reflect the final version. For any errors found in published e-books J-Novel Club asks that any corrections be sent to support@j-novel.club.

For what it is worth the line you mentioned has been addressed, and reads as the following in the final e-book:

Liselotte went so far as to lower her head in apology, causing Fiene to shake her own in panic.