Most Helpful Girl
She knows you still love her and wants to take advantage of that. She thinks that if she can keep you interested, then if something 'better' doesn't come along in good enough time, then she'll 'settle' for you. I use quotes, as this is most likely what she is thinking.
I don't know you though, so I'm sure you are a fantastic guy and a great boyfriend.
She is just stringing you along and trying to keep you as a back-up plan as well as a way to make herself feel better. You need to remove her from EVERYTHING. What's app, phones, any other social network, everything! That is the only way to send a clear message.
Send her one final message letting her know that you are removing her from your contacts and you would appreciate it if she respected you enough to not message you any more.
If she doesn't respect you that much, then that makes it even more clear that she doesn't really care about you as a person, she just cares about what she can get from you.
Trust me, as a girl I have done this unconsciously a number of times, and consciously done it once. It's a BAD idea! I learned the hard way, but I'm a better person for it. I also hate to see it happen to others, as I've personally seen what it can do to a person.
I wish you much strength in the coming months, and hope for your power of will to stay strong. : ) Good luck!
Most Helpful Guy
I'm Going To Give You My Unlicensed Professional Opinion, Girls Get Off (Not Literally) & She Wants You To Chase Her, Your Right By Not Doing That, If You Dont Want A Friendship Relationship With Her Then Move On...