Reaching abandon property owner

[Joe H Froehlich]

I have found an abandoned/condemned property. It appears as though all the taxes are current. It was condemned do to utilities not being connected and livabily. Hoarder house. I have found the owners name but all it says for contact information/mailing address is 'General Delivery'. The neighbor said the owner may currently be working at the local Arby's. What would be the best way to get in contact with her? I am new to investing and am not sure I would feel comfortable going to her work.