Yes, she really did not have the margin on her side this season. Since she is nr. 76, she was most likely just within top 75 until the end of season, and might have been pushed out of it after WC, which she also just missed because of margins.
Just checked the list: Julia Sauter got her SB score at WC, and is nr. 71 at the list, with 165.75. Her former SB score that season I think, was 160.42 points at EC. Josefin SB is 163.76. So, if i´m not wrong. Josefin was still within the top 75 until WC, but got pushed out of it because Julia achieved a better SB score.
When that said, I don´t think the panel was very lenient at WC, so there is no guarantee Josefin would have gotten any higher than her SB score, but she didn´t get to try either....