illegal use

Reinterpretation Vs. Copying

Hello dear typophiles community,

A client asked me to use a font for his logo that he found on dafont (doh…)
The one is "Little Days" and supposed to be freeware.
However, reading its comments I've discovered it's extremely similar to this commercial font Memimas.

Looking forward, I've fallen on this article by Luc Devroye. He claims it’s not a copy, but I must admit I find his arguments totally wrong.

Theft of a font

Hello all

The other day i walked into a store and saw a tee shirt that was printed using one of my fonts in the designs.
What can I do?
I cannot afford a lawyer and the country i live and work in doesn't have contingency based lawsuits.

I bought the item and made plenty of photos and an evidence file in which i overlapped the two letterings.

I will be glad to have any form of advice on this :)