YOU SAID:
Ella has mental issues
INTO JAPANESE
エラは精神的な問題を抱えている
BACK INTO ENGLISH
Ella has a mental problem.
INTO JAPANESE
エラは精神的な問題を抱えている。
BACK INTO ENGLISH
Ella has mental problems.
INTO JAPANESE
エラは精神的な問題を抱えています。
BACK INTO ENGLISH
Ella has mental problems.
That didn't even make that much sense in English.