Macbook pro Keyboard replacement

Its possible she did waste something on the keys if some are not responsive.
If something was sitting on it, that could also be a possibility that it may have done some slight internal damage on the wires connecting the keyboard.
Who knows, it may just have some dust in it and she could just turn over the top case, pull it out and blow on it.. ha..

No, but really, i would say she's probably on the right track, could've had sum type of moisture inside of it, or the keyboard has just become faulty.

I honestly cannot tell you any flat rate services. My guess for a keyboard and the inverter to close the lid you could be looking at $300+ at some shop, I suppose. Apple could be Higher.
If she is willing to crack it open, I would suggest ifixit.com and do it yourself, just go find the parts (not necessarily on That site, unless you just Want to.)
You may be able to find a keyboard for a nice price. But I had a A1150 1.83GHz Core Duo 15" MBP, but I still have the keyboard... although when it was on the comp I could never get it to illuminate.. Don't know if that was a faulty plug on my side from previous moisture or the guy who sold it to me made a fib (i wasted something on my LAST keyboard and bought it for a replacement. It worked great tho. didn't care for illumination too much personally. all keys functioned.)

But thats just an option.

Hope this can help.