She has an excellent case for redress.
Let us assume the warrant was for a person, as described. That allows the police to examine any place a person could reasonably be expected to be hiding. People do not fit into those laundry hampers, or drawers, etc. They exceeded their scope.
If the warrant was broader, it could be challenged as overly broad for an objective of finding a person.
If they were searching for drugs or anything they could use to pin it on her as a valid "bust" - it's inadmissible- they exceeded the scope of the warrant.
You do not just air out a space where tear gas has gone off. She will likely need to replace carpet, linens (might wash out), soft goods. At the very least professional cleaners will need to work over painted surfaces, wallpaper, upholstery, etc. Toss those stuffed animals.
True, you "can't sue the king" but I'm pretty sure every jurisdiction allows for suits in this case. Saying you'll "try to get together some money" is not sufficient. And that officer knew it.
I'm no lawyer, and I'm certainly a friend of law enforcement. But this was excessive, assuming it was presented accurately, and she needs to receive a lot of help from the government controlling the SWAT team.
I can't imagine why she hasn't gotten up with a lawyer already. Unless there's something more to the story.