She would definitely be on thin ice here. After working in centers for a couple of years, I've implemented the late fees into my home daycare. Let me tell you, it works wonders! I have a 3-strikes and you're out policy.

They only get a 5 minute grace period IF they warn me before hand. Then it's $1/minute for 5 minutes, after that it's $5/minute, then after 20 minutes, it gets worse. Never had to get to that though.

AND....upon arrival the next day, they have to come with the late fees in CASH only if they want care that day. IF they don't pay, they don't get care, and then a $20 late fee/day plus the late fees from the prior day are due at the child's next day of care.

It's quite mean sounding, but YOU are boss, and they have to realize that YOU lead a life outside of caring for THEIR children.

I've only had to implement late fees once, and let me tell you, I was NOT pleased, and wouldn't accept her apology because 1. I couldn't get ahold of her, and 2. I was very late for my appt. On a side note: this family only lasted in my care for 3 weeks (3 strikes in 3 weeks!!!).