@Cassie077 - it may be hard for you to understand. but she doesn’t owe you meetings or an explanation and if you’re honest you can probably look back at your last interactions and work out for yourself why she doesn’t want to spend time with you.
When you think about the last times you met with this friend, how much did you learn about them? How much did you help them? What did you offer them? Were there some laughs, or was it a quite intense discussion of how your needs have to be met?
Some people are uplifting to be with, you spend time with them and have fun, feeling lighter and happier both during and afterwards. When you talk they listen and put positive spins on things or offer practical or emotional support, but also you need to listen when they talk and offer this in return.
Were your meetings with her like this?
Some people are less like this. When you talk they don’t listen - either blocking what you say by not properly engaging, or turning the conversation back to themself all the time. - they’re self absorbed and have a negative mindset. It doesn’t make them bad people, but it’s a negative and draining experience to be with them.
Do you feel there’s any element of your relationship that was like this?
For everyone’s sense of well-being they need to set boundaries on relationships that protect them. If your friend talked to you on the phone everyday then that’s a lot already and (hopefully) she was happy to do that. She doesn’t ‘owe’ you meeting up in person and nor does she ‘owe’ you a meeting so you can tell her off.