Thank you for using JustAnswer. I am researching your issue and will respond shortly.
While I wouldn't necessarily say that I would "give" it to her lawyer, but rather potentially use it as evidence, that would not be blackmail. Blackmail is the extortion of money or something else of value from a person by the threat of exposing a criminal act or discreditable information. Typically in a judicial proceeding, a threat to use some bit of evidence that one could otherwise use for a particular purpose would not be blackmaill
So in short, no, this would not be blackmail. Rather, it would be evidence to try to prove that they're unfit parents. You're not trying to extort money or anything of value from them, but rather show them that if they do something, trying to take you to court, then you're going to use that information in court against them.
Hope that clears things up a bit. If you have any other questions, please let me know. If not, and you have not yet, please rate my answer AND press the "submit" button, if applicable. Please note that I don't get any credit for my answer unless and until you rate it a 3, 4, 5 (good or better). Thank you, XXXXX XXXXX luck to you!
(one clarification: blackmail, aka "extortion", specifically assumes that money or something of value will be obtained... if you're trying to keep something from happening, that would not fit within the definition of blackmail)
DISCLAIMER: Answers from Experts on JustAnswer are not substitutes for the advice of an attorney. JustAnswer is a public forum and questions and responses are not private or confidential or protected by the attorney-client privilege. The Expert above is not your attorney, and the response above is not legal advice. You should not read this response to propose specific action or address specific circumstances, but only to give you a sense of general principles of law that might affect the situation you describe. Application of these general principles to particular circumstances must be done by a lawyer who has spoken with you in confidence, learned all relevant information, and explored various options. Before acting on these general principles, you should hire a lawyer licensed to practice law in the jurisdiction to which your question pertains.
The responses above are from individual Experts, not JustAnswer. The site and services are provided “as is”. To view the verified credential of an Expert, click on the “Verified” symbol in the Expert’s profile. This site is not for emergency questions which should be directed immediately by telephone or in-person to qualified professionals. Please carefully read the Terms of Service (last updated February 8, 2012).