Will flooring it in first gear damage your car? (Auto)?

Yesterday I was driving back from the store with girlfriend and she was sitting with her feet up by the center console. She bumped the gear shifter into drive 1 or drive 2 and I didn't realize it till I hopped on the freeway. I pressed the gas pretty hard and realized the problem when the RPMs went to 6 / 7 (the red) and the car wouldn t pick up speed. I instantly pulled off the gas and then put the car in drive 4. I have experienced no issues with my car thus far. Will everything be okay? It's an 02 Honda Accord

As long as it is not making any strange noises it is fine, just don't do it again or it might damage the engine.

Yes it's fine.
Most cars need a button pressed to select a lower gear.
Her sitting like that risks serious injury in a crash.

No… The engine would cut off before the revs got too high.

Not likely that anything has gone wrong. But tell her how to sit properly.

No. You have a rev limiter that will keep the engine from revving too high.

No problem. Honda make engines that rev to 18000 for race cars

Duhh!

It's the wrong place for feet!

If the engine didn't explode, then it probably has survived.

The shifter could easily be bumped out of DRIVE into NEUTRAL, but not into FIRST. That involves a double motion. So I think that you're trolling!

Redlining that engine could cross up the valves and damage the top end. You'd know right away if that happened. Mind that she puts her feet on the floor or lay on the back seat if she has trouble sitting straight, since that could cost you a few grand to have fixed if it comes to valve damage. That vintage of Honda however, had an especially trouble prone automatic transmission. Start saving money for a rebuilt one when it goes south on you- and it will go south on you.

"Yesterday I was driving back from the store with girlfriend and she was sitting with her feet up by the center console."

Pretty dumb idea on the girlfriend's part. Feet on the floor whilst the car is in motion. This is a safety issue.

"She bumped the gear shifter into drive 1 or drive 2 and I didn't realize it till I hopped on the freeway. "

Another reason to keep you feet on the floor

". I pressed the gas pretty hard and realized the problem when the RPMs went to 6 / 7 (the red) and the car wouldn t pick up speed."

The engine's ECU has a fuel cutoff point (also known as a rev limiter or governor). The ECU will cut fuel to the injectors and/or spark to the ignition. Should the engine speed reach a certain point. When the engine speed drops below a certain point (generally about 100-200 RPM less than the cutoff) the fuel injectors and/or ignition start firing again. When this happens the engine will cut in and out rapidly. This is done preserve the engine in case the driver does something stupid, it's something that just about all modern cars have. It looks like it worked as intended in this case.

" I instantly pulled off the gas and then put the car in drive 4. I have experienced no issues with my car thus far. Will everything be okay? "

If you noticed that you were bumping into the rev limiter, then you backed off the throttle, then it didn't happen "instantly". But anyway, it looks like the rev limiter worked like it was supposed to, and your engine is fine. If you had broke something, it would be apparent by now.

Shouldn't be anything to worry about as the rev limiter seems to have done the job it was intended to do.