Bad tenant in Pennsylvania

[Chris War]

I own a rental property that has been a massive headache since day 1. Anyway, my current tenant is a single woman who owes me a month and a half back rent at this point. She's always giving excuses and lying about payment. I've done the eviction process in PA before. This one is a little different though because I was lenient with her due to her situation and she took advantage of that. She says she's moving out at the end of this month and I'm sure I won't see a penny. I'm going to post the eviction notice on the house this Monday just for legal purposes in case she doesn't leave when she says she will. 

I'm curious if there's anything legal I can do in the meantime to shake her up a bit and try to get paid what I'm owed? PA is ridiculous when it comes to the landlord/tenant situation. Landlords have to jump through hoops to get irresponsible deadbeats to pay their bills. I wish it were as easy as changing locks. 

Any advice? Thanks.