Separation can place a parent's immigration status and relationship with a child under pressure at the same time. A person whose visa was based on a partner may face the loss of that immigration basis before the Family Court has determined where the child will live or how contact will operate.
The legal challenge is to protect both processes without allowing assumptions in one to distort the other. The parent needs an immigration route supported by the real evidence available, while the family case requires careful handling of disputed facts, confidentiality and the child's welfare.