So I have tutored a girl for a while. We had a verbal agreement where she would pay me every two weeks and did the first time but it has been over a month since I last been compensated. She acknowledges she owed me in texts and all our meeting can be seen in our text messages yet she hasn't really made an effort to pay again, even with my texts saying "I hate to bring it up...etc" What should I do? move on? Kinda irritating. We are talking about 60-100 bucks she owes me. What do you do when people aren't true to their word?