It most certainly is not about drama.🙄
Its about basic cop on to allow the solicitor she has retained to do their job and protect her.
She moved in with him in good faith and bought a house with him.
She is leaving because of his mistreatment of her child right before Christmas.
Of course she should be very wary and not sign a thing.
If he changes his mind and decides to go back on his word, she would be told she was very foolish to sign anything without her solicitors involvement.
Personally if you were my daughter I would tell you not to trust him as far as you can throw him, and wait to hear the advice of your solicitor first.