我忒好的一姑娘
[wŏ tè hăo de yī gū niáng]
Simplifying to 'A Girl Who Is Truly Good,' this is an affectionate way of referring to a dear or close friend. In this context, '姑娘 (young girl)' and '忒好 (very good/awesome)' are used together to express admiration and appreciation for someone’s virtues or companionship.