| B Final | ||||||
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 1 | Mira Jeanne Maack | 20 | S8 | GERMANY | 1:25.15 |
| 2 | 2 | Arianna Hunsicker | 21 | S10 | CANADA | 1:15.84 |
| 3 | 3 | Aurelie Rivard | 28 | S10 | CANADA | 1:13.06 |
| 4 | 4 | Georgia Sheffield | 19 | S14 | GBR - BTMN | 1:12.55 |
| 5 | 5 | Amber Van Der Kruk | 23 | S14 | NETHERLANDS | 1:12.71 |
| 6 | 6 | Abby Kane | 21 | S13 | GBR - WUSX | 1:13.73 |
| 7 | 7 | Taylor Winnett | 25 | S10 | USA | 1:16.71 |
| 8 | 8 | Scarlett Humphrey | 19 | S11 | GBR - NHNA | 1:26.44 |