Plus, legally, if you start accepting late rent, it can be perceived by the court that you have waived your right to requiring the rent on time.Also, if your lease doesn't already include it, it should say that accepting late rent does not waive your right to demand rent on time in the future (although this is questionable as to whether or not the court would still think you waived this clause), and you should consider adding a daily amount after the initial $25, so it keeps compounding up to a limit.I used a Nolo Press contract for California, and it included a cap on the late fee of something like $250. 

I am not going to bust my butt doing something that is perceived as predatory for 30% of a few thousand dollars.

Fines for discrimination - real or perceived - can be devastating.

It's a whole different ball game for us with a very different set of rules about drunk behavior among friends or in public than here in the States.We are, granted, not generally perceived as a deeply inhibited and socially reserved people when sober.

The best way is to go see listings and talk to LLs and property managers.Over time, you come to understand that the local operators, people with significant experience in the property class within the local market, are usually running about 15-20% cooler on rent than third-party property management or amateur hour, which is almost always trying to jump that rent as much as possible as frequently as possible, looking at the money lost by not raising rent and keeping it as close as possible to what they perceive to be market value.In the kind of low-level C-class SFR I'm talking about, which I have referred to in the past as C/D borderline, pushing to get to market value is a trap.

Maybe a luxury house hack so that she's getting more, not letting go of what she currently perceives she has?

Make sure none of your responses can be perceived as retaliating for her mold complaint. 

My fam loves the tenant and thought it was a nice little gift...I thought...new laminate countertops..ok for cutting board.You do have to watch what can be perceived as 'friendship'with tenants.

Though I can see how by me listing the question it could be perceived that way.

Something to consider if you do have to evict: when you accept late payments, the court can perceive this as you waiving the original due date.