Using a Unix Timestamp Converter, she realized the number was a date. It translated to .
The text "ШЄШЩ…ЩЉЩ„ 1668858977985 jpg" appears to be a distorted encoding of the Arabic word (Tahmil), which translates to "Download." This specific string often appears in automated web indexes or file-sharing sites where the original filename includes Arabic characters that weren't decoded correctly.
: "ШЄШЩ…" is almost always a sign of Arabic text being misread as Windows-1251 or Cyrillic.
If you’d like, I can help you of garbled text or convert a Unix timestamp into a readable date for you.