If you can handle it (which I'm sure you can) call first. Make an arrangement to meet in a neutral place to meet. Tell her you're ready to hear her now. Go and hear her out. Do not share anything about your decisions... just listen. When she's done, thank her and leave. Do not get provoked or try to share your thoughts or feelings.
She may try to blame, accuse and guilt you into making you think this is all your fault. Do not take the bait. When she is done, thank her for her time and leave.
If she asks you what you're thinking... tell her you have some things in mind and will let her know when you're ready.