Here's the corrected version of your text:
After a huge string of customers desperate for a taxi, Hyejin was finally able to return and continue to stalk.
She'd heard Mark's laughs and unnecessary comments throughout her walk around town; he really was going to get a cut in his pay that month.
Eunji didn't have a very interesting life if you just followed the time she went in and out of work. Could a girl really live so boringly?
Hyejin had enough time to eat lunch, watch a movie, and still had time to talk to her weapons supplier. She was really looking forward to receiving her new acquisition: 7.62 Tkiv 85. What could she do? Weapons were so beautiful and interesting; she wanted them all.
When Eunji finally showed up and left the building, it was past 9 pm, and the delay was so long that to disguise it, Hyejin was forced to go around the perimeter of the building several times to disguise that she was watching Young Kim.