rent debt collection

[Henry Li]

so my client's tenant is about to be moved out by an execution. The judgement has about $3900 owe to the landlord. I have 2 questions:

1. per the lease, tenant is responsible for legal fee if the issue is raised by her. for non payment, I think she would be responsible for the legal fee. this is not in the judgement, but can I have debt collector to collect legal fee also? 

2. anyone has any good debt collection company to recommend? I think in Massachusetts is preferred, but as far as I know it doesn't need to be in the same state to do debt collection. 

 I think I need a good one that can track tenant down by ssn , and have a way to collect debt out from her wage or something. 

thanks