In the two magisterial districts I am in, the magistrates won't allow anyone in unless they're a landlord, tenant or one of their attorneys. I guess if someone had a 'witness" they'd be allowed in but I've never seen a witness at a landlord tenant hearing. No spectators allowed inside.
Depending how much $$$ is owed, I would consider taking the father's money and making him pay the fcosts and then when they miss paying rent again, refile. If your desired result is getting your money, I'd take what was offered when it's offered.