
#1 I think it is GREAT when a mom wants to get involved in an area of their children's interest....very impressive.
#2 An undertaking of this type is possible if a person is willing to learn first from people who are successful, and don't "skimp" on equipment, work, or expense in areas those folks recommend.
After years of experience you will know what equipment you can DIY or not....but one thing for sure if a fish needs certain water conditions to be healthy and breed, you are just flushing $$ down the drain if you don't provide the correct conditions.
I'm currently looking at an endangered species to breed, and the requirements are a 180 gallon tank minimum, with weekly water changes of over 100%....nitrates 0-5! This is a huge commitment, and you couldn't just have one tank!
One thing for sure, there is a high demand for L46 here in the US...It may be hard to deal with all the hassle of shipments and such though. Tell your mom she is awesome....