The only way it’s “worth it” to replace the clutch . . . meaning installing a complete clutch kit, which includes ALL the components needed for the job . . . would be if op buys decent aftermarket parts and does the job herself.
If she were to go this route, I suggest driving the car for about 2 years after the clutch job, or until the next major repair comes calling, which it will. At which point it’s time to dump it like a hot potato
If she’s paying for labor and parts, forget it . . . either scrap the car now, donate it to charity, or give it to a local high school auto shop program
But if you do that, make absolutely sure you’re legally off the hook, in case that new owner doesn’t register the car. That means signing a release of liability. Best thing is to sign it, mail it in, AND do it online also. There are too many horror stories about previous owners racking up penalties, fines, etc., because the new owner never bothered to properly title and register it