First off. I would wait to send a response. You dont want to appear too needy.
Like Jen said. You r not going to convince her to come back by writing a couple emails. Your actions over time will speak for themselves. Might take a long time. Any attempt to make a case for yourself will come off controlling and agrumentative whether u want it to or not. Validation is the key. The "Im sorry that u feel that way" has always been a topic of debate for the validators on here. It doesnt always sound the way it should. It comes off a little negative and in oppostion to validation. What she will hear is "Im sorry that u feel that way because I dont". This stuff is so tricky. What u have said is good. You're on the right tract. Just dont hold onto every word as a way to turn it around. Just listen, mirror what she says, VALIDATE then empathize.
Update on what I plan on sending her. Input would be greatly appreciated.
W,
I am sorry that you feel this way.(remove - comes off negative) I would like to get to know the real you. I know you say that you're not good but (reword - agrumentative) you've shown me so many good things in life. You are full of love and compassion. Those aren't things that I ever pushed you towards. They were already inside you. I didn't push you (reword - negative/agrumentative) to march against the SOA or raise money to help clear landmines. I didn’t push you (reword - negative/agrumentative)to rescue the dogs and cat. You entered the nonprofit world because you love to help people. I have learned so much from you and I will be forever grateful. There may be things that you’re finding out about yourself that are a surprise to you, and might be a surprise to me, but there’s nothing (reword - negative/agrumentative)that you could ever do or be that would be repulsive (use different word/negative conotation) to me. You might not believe that (reword - negative/agrumentative), but it’s true.
I know that I was controlling in the past. I don't know if you will ever see it, but I am learning from my mistakes. (remove - Actions speake louder) Please believe that I've never had anything but unconditional love for you.