Apologize for cussing her out, especially if she's a good girl. Understand she may not be accustomed to a man beung that aggressive and as women we're taught that is a form of abuse/red flag so she may A. Run or B. Walk back but with caution. If she is accustomed to that type of escalation then she has probably taught you that its ok to cuss her out and when you get upset again, y'all will be right back in this same predicament except the more you do it the less you'll feel bad about it.
Apologize. Be sure to state the offense, her feelings dye to the offense, and the assurance that it won't happen again (it will). Throw in compliments as women are very vain. Talk in low tones and hold her hands while apologizing with unwavering eye contact. When i was young and dumb that shyt used to always get me...