If you make this investment, not only are you going to lose all your money, you're gonna get dandruff, your dog is gonna die and your daughter is gonna run off with some biker dude!" 

Even a mother-daughter or a single-family with a legal accessory unit could do the trick.In the meantime, I’d also run the math on a condo or townhouse—especially if you can find one with lower HOA fees and strong resale or rental potential.

My my sister, (the niece that I am having the issue with) her other daughter and her granddaughter, (the niece that I am having the issue with) live in the duplex. 

I've taught my 5-year-old daughter to ski and my 3-year-old son to ride a bike.

My daughter was getting married and her now husband's family worked for Evan Williams in Louisville.  

My daughter will be a senior in high school next year.

Generally you can come close to a free living situation for your daughter or even make a little NOI by renting out the extra rooms. 

My daughter goes to Spelman and her rent is $1878 for just her room in a very tiny apartment.

I found this FSBO listing and personally spoke to the seller and his daughter.

Your daughter will acquire the property in her individual name, using funds from you for the down payment.