Fortunately the Spenserian maiden is hidden within (3)

I believe the answer is:

una

I'm a little stuck... Click here to teach me more about this clue!

'spenserian maiden is hidden within' is the definition.
I can't judge whether this definition defines the answer.

'fortunately' is the wordplay.
'UNA' is hidden in amongst the letters.
But, I'm not sure how the hidden word is indicated.

'the' is the link.

Can you help me to learn more?

(Other definitions for una that I've seen before include "A single Spanish" , "Girl" , "- Stubbs, Eng. actress" , "She's one in Italy." , "of satellite with no sides" .)

I've seen this clue in The Irish Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.