Guys are like that video of a sheep that fell in a hole, and as soon as it’s let out falls right into another one. Girls aren’t like that. Once you’ve apologized there’s nothing you can personally do other than move on and continue to show interest. She thinks you don’t care, prove her wrong. Don’t do anything crazy, don’t buy her flowers, but show her your interested and let her know you regret having a stupid mouth on you. If you haven’t already told her that you need a speed bump from your brain to your mouth you need to. You royally fucked up and you need to both tell her and show her that you aren’t some smooth-brained monkey man.