Hi saradane,
If you want to contact her, then do. Maybe send a short text saying want to get a coffee or whatever you like to do together.
Then it's up to her to reply, at least you won't have a dilemma about not having contacted her.
I understand that she is your exgf, but this is the place to look at the possibility of reparation,( I'm assuming that is what you want

) so reaching out to her from a place of kindness and concern might be good for both of you.
Let us know how you get on.