Typically [in the US] you can't collect unemployment if you're terminated with cause - something like not showing up to work or not doing your job. Given they terminated for poor performance, this is typically not a scenario where the employee could collect unemployment. In Georgia, for example, she should be given DOL-800 which indicates the reason and explains what her unemployment options look like. If she has evidence this is more of a layoff or that her performance was not bad, she could provide that evidence to her state's Department of Labor to prove that Cloudflare is lying about the reason for termination and thus she deserves to receive it.

However, she likely received some amount of severance, which would mean she would get less or no unemployment income, depending on how much it is in relation to what she would've received from filing for unemployment.