Hi Jorge,
If you don’t have mutual friends, you may still have a chance at this friendship not being over.
19 years of friendship is a long time.
Women often value relationships.
She may still come around to wanting to reconnect with you.
Something that you can try is to start being more social in your town.
Go out more often to some of the local hot spots for singles.
Being that you are both single, you may bump into her at some point.
If this happens, it is best to avoid initiating conversation.
Instead, let her be the one to do so if she so chooses.
Being that it has been a month since you last interacted with her, her emotions may have settled.
Hence, there is a chance that she would be more willing to talk to you at the venue or reach out to you at a later date via text.