Its great that you had good time together but if you want her to fall in love with you then it takes consistency. meeting each other regularly. I think 24 is enough for any country to spend night outside of home with opposite gender. people been starting families at this age. Anyway I dont think its cultural thing but more like listening, depending on parents too much.
So you been kissing. Its interesting that you havent went all the way. You know theres this type of sex without orgasm called karezza. After orgasm people get satisfied and lose interest in each other to some degree. So relationships stay exciting for first 1-2 years and then gets old or whatever. But with this karezza people been claiming that excitement last for decades, not just first honeymoon period in relationship. So you might want to research deeper in this. Also theres book about it called Cupid poison arrow.
Anyway I think you have to ask girl to reevaluate her priorities. Whats more important to her - her mother emotional comfort or your relationship progress. If girl is not ready to grow up then shes not ready to be in relationship. Simple as that.
Also better stop assuming things but talk them over with her. you have to adress these problems with her in person next time you see each other to decide where is your relationship is going and if its going anywhere at all and is it worth continue like that if changes are not made. Tell her what you want, ask her what she wants to happen and how you both are gonna get there. Perhaps you both just want different things, and thats fine but then you are not a right match.
Doubt kills more dreams than failure ever will