This is the 3105th most frequent Japanese word.
何かしら
"Something or other; somehow; in some way."
In this sentence, '何かしら' is used to suggest that there is possibly some unspecified solution or method available, expressing an optimistic uncertainty.
何かしら助ける方法があるはずだ。
There must be some way to help.
'何かしら' here indicates an unspecified or unknown reason, acknowledging that the exact cause is not determined.
何かしらの理由で彼は遅れた。
For some reason, he was late.
This usage of '何かしら' implies an indeterminate type or kind of talent, suggesting a broad possibility or potential.