Desperately need help correcting my mistake and learning a lesson.

I may or may not have messed up a repair I just did for a customer. I'm new to repairs and generally take my time but for some reason I rushed a bit and messed up. I was just doing a simple screen replacement and I broke the ribbon to the home button. I know that now it will be impossible for my client to use touch ID (unless someone can give me a magical solution... haha). I've ordered a new home button and that part is easy to replace and arrives tomorrow. I accidentally chipped the bottom of the new screen I ordered on amazon for $60. Now I have to order a new screen for another $60 while I wait for my refund. I also got scammed on ebay and am waiting on a $40 refund on a screen. The customer is my SO's sister and wanted to continue using the phone while I wait for parts. Now she's telling me that it won't charge past 80% and is getting hot. Is there any way for me to completely reverse and correct what I've messed up here? I'd like to make the phone work like new again minus the touch ID but I'm also considering just taking this as a learning lesson, buying them a refurbished phone and then working on the old phone and selling that to recoup whatever losses I can. I'd also love it if anyone had any advice or pointers about repairs in general or maybe know some good reliable suppliers that don't take 3 weeks to ship. Thanks guys