Like the butterfly's wings, if you listen carefully, you can hear her heart speaking in unknown tongues.

"She has all her walls up"
You have no idea of things she had to go through, to make her build those up
The constant hurt
The road to rebuilding her self-esteem that she gave out, and got broken shards of different part of herself.
Her walls need to be up, so despicable excuses for humans like most men won't get her.
They won't inflict the hurt, the one that made her hurt.
The hurt connected to her "opening up" personality.
You should respect her decision.
Stay away.