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She's been feeding a line to Mitch.

Hi,
Does the above mean "She's been making up a story to Mitch" or "She's been telling lies to Mitch?" Thanks.
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It's a prepared story/statement of some sort -- something that's been concocted to achieve a certain effect. It could be an out-and-out lie, it could be intended to mislead but fall short of being an actual lie, it could be "spin", etc.
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providing a certain canned/prepared text/reply to him
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Comments  
Yes, you're right. It'means to lie or exaggerate.
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