Wii - realistically - is she someone you would really want to be with? She has kids at home that she doesn't want to talk about, plans to adopt another, is much younger than you - now you've learned - even younger, and doesn't respond to your date requests?
A friend, perhaps - but texting does not make a relationship. And you indicate that is what you want.
Sometimes we spend so much time & energy chasing the wrong dream and it keeps us unavailable for the right one.
Just my take on it. Have a nice Saturday.

Barb