Angry Tenant Need Help ASAP

[Jackie Dean]

I am a new investor and afraid of getting sued. My current tenant is so angry at me and yelled at me. Since she has moved in my property, she has made many complaints regarding plumbing, clogged sinks, leaks, etc. I first lived in this home and turned it into a rental with section 8. I never had problems with the plumbing. Since she moved in this year, she has made about 5 complaints regarding plumbing. I have had plumbers come out to make repairs the next day or two days after complaint. She is now claiming the sink faucet has always been broken and is beligerant that I fix it. When I was at the house for repairing the two toilets and replacing garbage disposal her adult son told me that he would buy a faucet and I said that would be fine. I told him to let me know and I will have the plumber come back to install it. When I was leaving she said that I still needed to replace the faucet and I told her that her son said he would buy it. She was furious. She screamed at me saying I need to pay for it. I dumbly yelled back and told her they broke it and I am not  paying for something they broke and to call me to have the plumber install the new one. A couple days later and I have not heard anything from them. I have called and received no response. I have called and emailed her to schedule the repair and have heard nothing back. What do I do? I do not want to get sued or have them trash my property. What do I do? I feel extremely uneasy and really need help. Do you any advice? What would you do?