<human>: Can you succinctly summarize the text in 1-3 sentences?

This happen yesterday afternoon. I been trying to dual boot Mac OS and Windows on my wife's MacBook pro. It's a late 2011 model so support from Apple is almost nonexistent which is great when they wanted to charge me chat with them. 
I convinced them to a free chat and learned that apparently my hardware is to out dated to have boot camp make a bootable usb. 

Boot camp assistant on this MacBook only does cd iso img. I didn't have any blank DVD's laying around because it's 2015! So I made a partition and had my USB in made on my windows desktop. 

So here is where I fucked up.  
1: I never thought to back up any of her files. I knew I had to format the windows partition and then I can move on to installing.

2: Trying to do all this pissed and just clicking away. 

3: Delete the wrong hard dive part and corrupt the hard drive and have to re format the whole computer and lose every file that was saved on her computer since 2011. 

I got yelled at for a good hour. I knew it was my fault but at the same time... 

HOW IN THE WORLD HAVE YOU NOT BACKED YOUR THINGS IN 4 YEARS!
<bot>: Tried to install Windows on MacBook and ended up erasing everything without backing up and losing 4 years of my wife's work.