To be honest, it’s really hard to get a paid entry level job on the Hill without some connections. She needs to start networking or she needs to intern (and even then, those can be hard to come by).
Can she contact her internship boss and see if he or she can pass her resume? Does her school have any connections to members of Congress? What about fellow alumni?
Would she be willing to spend 2024 on a campaign? That’s a great way to break into it. Start as a volunteer and usually the dedicated volunteers are offered paid roles later in the year.
But none of this is going to be well-paid, and because of the hours, she may struggle to find a PT job to supplement. So prepare her parents that they will still be financially supporting her, even if she is getting paid.