Good morning, Terry;
Nice to hear from you again.
This is not going to be an easy one. How attached to this particular Minolta X-370 is your friend? If the problem is just with the lens mounting flange on the camera body, it might be repaired fairly quickly and not too expensively. There is also the question of the bayonet on the back of the lens; is it bent also and needs to be replaced? This will be an additional expense to consider no matter what happens to the camera body.
Perhaps depending on the strength of the 13 year old, has he also deformed the front panel of the X-370 camera body? If that is the case, then the clear choice is to find a replacement camera body. Trying to realign the lens to the film plane will probably exceed the cost of a replacement camera.
The cost of a replacement X-370 through KEH or even e-Bay is not too great. That might be the better way to go if the repairs will be extensive and also expensive. Please include the cost of a repair to the bayonet on the back of the lens if required. That part might not be too bad. Or just another lens through KEH or equivalent. The last time I checked, a 50 mm f 1.8 Rokkor was less than $ 40.00.
The final decision will be made by your friend, perhaps in consultation with her local friendly camera repair technician. If she does not yet have one, Garry's in Indiana is one place recommended for Minolta work.
Then there is the point about what she will do with her camera after it is either back or replaced. Should she let her 13 year old son use it again unsupervised at camp? That is a family discussion to be handled by others; not me. I have my own thoughts, but they might not be persuasive, let along appropriate.
Nice to know that you are still here, Terry.