Where do I begin... well #2 is the easiet… that form is required.. and buyer and seller have to report the exact same things and amounts.  

#1 & 3 ok.. so the sale of the business is really the sale of the assets, inventory, and and goodwill/non-compete amounts agreed on.

So... if she sold 74 assets.. she really has 74 sales.. so your are going to have to determine a sales price for ease depreciable asset sold and record the sales in that section of the asset entry form. I usually do an excel spreadsheet to prorate sales price based on original cost(, or some similar formula).  On each depreciable asset,in the disposition section.. there is also a  box to link to a 6252 sale.  And I think you can link all 74 sales (in my example) to the one Form 6252.  If by chance... she got less for the equipment (the depreciable assets) than the book value…. you can report all of those losses on the 4797, skip a form 6252... and only report the interest collected each current and future  year on Schedule B.  Additionally, you could opt to report all of the gain on the depreciable assets (if minimal)..on the 4797. and dispense with the 6252 for current year and future years... and only be responsible for reporting and paying taxes on the interest earned in those years. 

obviously the inventory part...would be reported as sales in her ( i'm guessing) Schedule C.  And any goodwill/non-compete as a Sch D item.