The most common and most likely answer to this crossword clue is the 4 letter word BABE
I've seen this crossword clue in Financial Times
B
A
B
E
More clues leading to the result BABE
- . Old president pursues black cutie
- Book by president is dear
- Young person seen regularly in brambles
- Ruth maybe in a confusing situation endlessly
- Clever pig
- In crib, a beautiful young child
- Child born before Lincoln
- Ruth was one good-looking young lady
- Show person unfinished racket
- Attractive girl in black Lincoln
Buddy explains!

The straight part
We know that "Ruth maybe" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ruth maybe = babe.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BABE mean?
BABE noun- A baby or infant; a very young human or animal.
- An attractive person, especially a young woman.
- Darling (term of endearment).