Ugh.

 

yikes

Change motor oil for sure - top off at minimum

 

I'm surprised she didn't call you when the car was buckling and kept hitting the rev limiter. My wife calls me if the car idles funny lol.

 

Need picture of girlfriend to see if she's worth keeping, but she's going to look like Eva Mendes for that to be a yes LOL.

How did she lock it in first - pulled the shifter all the way down? Even in Tiptronic manual mode, after a few seconds of no manual shifts it will revert to regular drive mode. Did the engine temperature remain in the normal range or get hot? I'd suggest a trans fluid and engine oil change at a minimum.

What does your girlfriend drive that she doesn't know to put an automatic transmission in D to drive it?

 

Also curious on locking the 1st gear only the transmission will always go back into auto mode.

My daughter drove my 911 Cab, 12 miles to school with the parking brake on.It was her birthday.I could smell it as soon as she pulled up, rear wheels on fire!

 

reminds me of the time my dad was driving the family home from a Boston road trip in our family 1974 thunderbird. He had the parking brake on the whole time. he noticed a SLIGHT lack of power , About an hour into the drive, I see a wheel rolling down the freeway next to us. turns out, it was our wheel. Dad safely brought it down to a halt and the car fell down on its dead axle. didn't know parking brakes left on could do something like that.

 

I do not think she drove it 1st gear all the time. The car shifts up to next gear once rev limit is reached, and to prevent just such an occasion. So yes, it was probably high on RPMs, but not in 1st gear all the time.
I would change oil though unless done very recently.