@Kimberly718 I'm not sure about an additional linen fee unless this is posted on your listing Airbnb may not enforce payment of this, they may not enforce it even if it is posted. After having a set of guests who each person used an extra blanket and comforter and then attempted to stuff everything back in different linen bags causing us to have to wash almost everything in the closet...we posted a notice that if guests want any linens extra/different they should contact the hosts.
As for reviews, there is no way a host can prevent a guest from leaving a review. The end. If you don't review their review will post after 14 days, so you should absolutely leave a review of them..professional, unemotional, recounting the basic facts...that they lost the TV remote and that extensive additional cleaning and sanitizing was required after their stay. I wouldn't get into the why of the child being sick, etc. it's not a useful detail. If they were poor at communicating you could add that as well.
Why would you tell theses guests you aren't leaving a review? They can only change their review for the 1st 48 hours and you would be running a risk that Airbnb would interpret this as a type of quid pro quo which is prohibited and will get you in trouble.
Hosts have different strategies for dealing with guests who cause damages. Some leave extra nice final message and then do an honest review ASAP, in the hopes the guest will also leave a positive review sooner rather than later..eg.. the purpose is to get the review done before asking for damages. A lot of hosts don't ask for $$ for small things due to the high chance of a retaliatory review, and then wait as long as possible to leave a negative review, eg. with the idea the bad guest will forget about the review until its too late.
It is very hard to get Airbnb to remove a review and they won't do it unless you can convince them it fits their listed categories for removal.