Not responding can be seen as shunning; like begetting like.
MrsJones, said to sit on it awhile. I agree.
And in the mean time I would be pondering on a return letter that centered on the subject of love; and how you are attempting to cultivate an unconditional love for all life.
Here, are, perhaps, a few little seeds to start the process:
Do unto others, as you would have them do unto you.
Throughout history humans have been drastically short on love, and have limited it to only close family, friends and tribe. A “love” that is the root cause of all conflict, war and mans inhumanity to man and nature.
Yet, there is a very important dynamics alive in our hearts, the desire to do better and be as genuinely loving, caring and compassionate as we can possibly be to all. In a sense, to be more Christ-like.
Tell her you understand her views. Embrace her, rather than push away or ignore her as insignificant and unimportant (let her do that to you, but in no way return it). Make every word expressed show true caring and love for her. (Note: this has to come from your heart, or it is all BS and lies that will serve no one.)
Make it as clear as you can how, in your eyes, shunning and cutting people off, only adds to the pain, stress and despair that the world is already too full of. Pushing people out of our lives only exposes the limitations of our love and caring....and in no way expresses the genuine love and empathy that wants to come forth from within our deepest heart.
Don't try to convince her of anything. Just make it clear how you feel and desire to improve. If she is open at all. She will see, she will feel an agreement to your words and feeling within her own heart that echoes yours.
Use her language when you can...to help her be open to your message.
Certainly, my heart tells me, that Jehovah's love, the Creator of an infinite universe, must have a love infinitely greater than our own. I use Him, and the beauty he has given us within nature, as a guide.
Or whatever. Speak only your heartfelt words. These are just a crude and feeble example.
Take your time on it. Take this opportunity to become clear in your own heart and mind on what love means to you. Take it to the depths of your soul, and discover.
Be still, and know.
Does this make any sense?