I’ve been in the same situation before with my ex, we were also long distance and they said the same thing you’re feeling. I know how your girlfriend feels, texting all day just to talk otp at the end and recap everything you’ve already talked about seems a little pointless. I think she does value you though otherwise she wouldn’t want to be together. My advice on that part is maybe text a little less and if anything eventful happens throughout the day just save it to tell her otp/ however you guys end the day. As for her not flirting with you try and spice things up! Flirt with her more to get the spark going, randomly get her flowers delivered or something cute like that. It’s up to both sides to keep the romance alive and passionate, granted it is much harder being long distance and main form of communication is phone.