When you love someone but she doesn’t love you back, it is better for you to look for others. You have done everything for her but there was no special response coming from her. In the beginning of approach, she welcomed you badly so you felt good. When she responded late for every massages and calls from you, you always think positive in the name of understanding. But all of your actions were useless.
Someday you asked her for permission to meet her mom to directly saying about your kind intention, but she refused. She promised to meet you explaining the reasons. But, she denied.
It’s better to you since this time is to move on. Look for another, be strong and confidence.