They already fished, and pulled up her name and address. If it were the feds, and they cared enough, local agents would've shown up at her door. Odds are that this is what it appears to be. But it's strange anyway, and I'd think it over before responding. Not sure I'd want to help somebody sue Ramada over bedbugs. And the law firm will probably call on the phone or send her an email anyway, if they're going to do anything about it.