Cabrona is a very strong, versatile Spanish slang term. It can literally mean a female goat, but in everyday speech, especially in Mexico, it describes a woman who is fierce, tough, and takes no nonsense from anyone.
In this song, the word is used as a bold compliment rather than an insult, celebrating a woman's fearless, badass attitude as something to admire instead of fear.
This song is a fiery declaration of independence after a bad breakup! Our singer is absolutely done with an ex who treated her terribly. She tells him, "con me saliste muy cabrón" [you turned out to be a real jerk with me] and that he didn't care about hurting her. Now he wants her back, but she's like, "aquí ya te chingaste" [you're screwed here]! She presented herself as a queen, but he didn't appreciate her.
She's not holding back, calling him out for his empty promises and saying everything with him was "peor que coladera" [worse than a drain]. She even thanks him for kicking her out because now she's free! She tells him he wants to come back, but she's moved on to better things, leaving him with his "muchas viejas todas llenas de agujeros" [many old women all full of holes]. Ouch! This song is all about reclaiming your power and telling a toxic ex exactly where to go.