Can text evidence be disproved in court as hearsay?

[Mom12081976]

My boyfriend's ex-wife sends him harassing text messages constantly about me. She calls me racists names, fat, ugly, says I look like a tranny, etc. She even says nasty things about my 13 year old son. She took half naked pictures of herself in bathroom selfies and tagged me and my boyfriend in them on Instagram. She also says nasty things to her 13-year old son about me. She even told him that I posed nude in a porn magazine (completely untrue).

Mind you, this is a woman in her mid-40s that I have literally NEVER spoken to her in life...like ever. It's all been this awful, volatile, one-sided tirade because she doesn't want my boyfriend to move on and be happy.

We filed harassment charges against her last fall and we are supposed to go to court next week. The state's attorney called today and said that her lawyer will say that we can't prove it was her sending those texts. Even though we literally have pages and pages and pages of text and social media evidence, they can say that we cannot ultimately prove that it was actually her and not someone else that sent those texts.

I am so upset - I just want justice to be served and for the court to put in writing that she can no longer harass us anymore. It's so not fair!

Can anyone share their experience with this? Will she be able to get off scott-free with the hearsay defense? How can we prove it was her?