Mold inspection related tenants issue

[Huiping S.]

One our single family home tenants (two late 30s woman as roommates) are fine during past year: never late pay although lots maintenance requirements, such as gas log stopped to work from their cat hair, and their door knobs are very easy to loose. 

Before the end of one year lease, one decided not re-new the lease and another one signed one more year lease and we agreed her to find a new roommate who needs to pass our tenant screening and then we re-sign the lease. No new roommate yet, and current roommate will move out in one month.

Since then, lots requirements within 1 month: 

1) the doors and handles become loose very often (we lived in this house before and never had this issue); 

2) said shower water needs 8 min to warm enough in upstairs. After inspection, the plumber said that is to exaggerated the time, but we replaced a new water heater;

3) the one plan to stay said she is very sick lately and fatigue and said she saw mold inside refrigerator one year ago when they moved in, and asked us how long this home didn't have mold inspector. 

We hired mold inspector with lab tests and no any sign or issue of mold. We told the tenants the outcome and the tenant asked for the report. We think we told her the final outcome: no mold of that property. She should go to hire her inspector to get her report if she no trust of us.

4) Door handle of the stay tenant loose again and fixed! 

5) Kitchen sink disposal stopped to work and our regular maintenance person found coins inside it. We send out this fact with our signature to tenant and remind them to be careful for it.

We are always very fast on requests although those two are top high maintenance compared to other tenants. The property is in good shape, return is good, very low loan interest rate, close to big hospital and medical group, filled tenants within 15 days with lots applicants last time. We are not plan to sale it now.

For the mold inspection, they told inspector the time when they moved in one year ago, there are mold on refrigerator, we strongly doubt it because this property never had any water issue, and they never send us picture. We asked do they see any mold inside now, and they said NO. Tenants and us walked through before they moved in and nobody see mold.We let them moved in one day before the lease started because they moved here one day before from another state and need to stay in hotel.

We are not dependent on rental income or this property income. If she really can't find new roommate and can't afford the rent, we want to work with her if she will not waste our time and money like she did during this month.

Her attitude to ask for mold inspection and report, the coins inside the garbage disposal, and lied for water heater really insulted us! 

We can present the mold inspector report in court but dislike to give to her the report which we paid for it and she is so demanding. At the same time, she seems think she can ask us to do anything she wants.

Our property have very expensive umbrella insurance.

Like to hear other landlords' thought and strategies to handle this tenants, what will you do for this situation?

Thanks.