If you google the make and model of your laptop and power jack you will find thousands of places who will attempt to replace the power connector for you. Depends on the laptop as to how easy it is to do, some it's just two or three solder connections that are real easy to reach, others not so much.

It's very common on some models of Dell. There are also companies out there that make battery chargers that charge the battery directly, not on the laptop, for those who choose not to repair it.

I don't believe any of the major manfg's support jack replacement, they all require a motherboard swap. When mine died (it was a dell) and I couldn't jiggle and tape it anymore to get it to charge, I lucked out and found a replacement motherboard for not too much money on e-bay, and I just swapped out the motherboard. The solder joints were cold soldered and they had cracked over time and stress.

If you are fairly handy and talented with a soldering iron you can buy a new jack and put it in.

I believe when I was looking at the places that repair it the standard prices were between $85 and $125 plus $5 for the jack, based on which model you had. I can solder, but on mine there was way too much stuff around it for me to attempt to do that level of repair.

It's a very common thing, don't blame her unless she abuses it.