Would you clean this it’s 100% tufted cotton the stain is from Doritos lol
I was thinking I would acid rinse and clean with a
sapphire upholstery tool to limit the moisture maybe even encap and pad
What Richard "Desk Jockey" said.
The issue is the dye stain, and what they seem to have done already; neither of which are your responsibility.
The good news is that cotton often releases artificial colors easier than wool or nylon.
Is the stain the only reason they want this to be cleaned? If so, and you think it is worth it for you to do it, give it a light cleaning to get out the particles and grease. Then apply a red dye remover and just let it work without an iron or steam while you find something else to do for half and hour or so and see what happens.
If it does any good at all, you can apply some steam (not with a damp towel, just direct steam) and see if it lightens.
I give it one chance in three.
Be like a doctor: Get paid even if the patient dies.