So i did all things that the father needed me to do for the mission to progress and i went to z1 he told me that the brotherhood of steel is going to the hideout and i chose to warn desdemona and when i go talk to her she will not go into dialogue with me she just keeps saying random things that dont matter please help i do not want to have to restart or kill her instead which wont be an option.....
Side note i killed all bos in the blimp and i didnt do many missions for them but i did do the ticonderoga mission.....
PLEASE HELP!!!!!!

If I remember correctly, you have to progress further in the main story line before you can warn her. The game doesn't make this clear, however.

The thing is i did all the missions for shawn to where he wants me to kill desdemona and after i tell her shawn wants me to kill her she says im busy

Have

MINOR SPOILER

Have you started the Railroad mission where you make contact with the undercover agent in The Institute?

Yeah thats the mission im talking about with z1 and the patriot dude and making a synth rebellion at after they tell u to do more missions for father so they can make the weapons this random guy tells u to talk to z1 then z1 tells u to warn desdemona and then thats the problem