Tina's Treasurehouse

Tina is highly unethical. She accepted my reimbursement of childcare expenses from my job (I had to submit receipts, then she would receive the reimbursement applied to my account) and secretly kept it. I looked into it, wondering what took so long and found out she received some of my reimbursement after I had changed jobs and moved. I must pay taxes on this money, yet I am still trying to get her to pay this back after 2 years! She even wrote a lengthy, redundant "contract" promising to pay me. She has lied and made excuses, completely unprofessional. This has been utterly frustrating.