Why say that you come into a cichlid forum and meant to comment on the guys tank and say not my sort of fish then dont come in then if there not for you.
I would suggest your mom looking for a full grown or even a little smaller BRISTLE NOSE PLECO for all that nasty algae going on in there, takes away from the beauty of the fish when you see the GREEN GOO
I think happs are fantastic fish but people dont see that, as it takes many years with some to show there potential. for instance, a little dull silver fish will end up like this fish, the placidochromis phenochilus. I have always prefered mbuna, but after seeing a fully established happs tank, I have changed my mind and theres no way I will look back. your tank looks lovely but I would say that the substrate looks a little on the bright side, but thats only my preference.
heres a picture off the net, hope mine looks like this when its grown some, its started to go blue.