You are hurt and if you continue to text her and expect or hope that she will return your text, then you will be setting yourself up for more pain. My suggestion would be to not initiate a text to her. Allow the friendship to fade out if that is what needs to happen. you needn't to blatantly end anything, just let time do it for you.
I was in a long time friendship and for years, many of my calls were not returned (particularly if I called to do something on the weekend) however, I kept settling and would go out on the week days. I continued to invite the person to many functions we had (while seldom being invited to anything she did with her friends) and ............ boy oh boy did I end up having resentments.. Now, I no longer call her or reach out to her in any way... she has tried to contact me, but I decided that while I can't change her behavior, what's most important is that I change mine and STOP allowing myself to be a victim. Once I decided that I needed to be the change in the situation, I finally began to heal and move on..
You can still be friendly... just try and move on and nurture other friendships where it's more give and take..
good luck