Is the first marriage considered void since it was conducted without a legal guardian (wali shar’i), and consequently, is her second marriage valid, or is she still the wife of the first man, and what is the ruling on her actions?

Marriage without a guardian is invalid according to the more preponderant opinion. Khul' does not require a judge's ruling, according to the majority of jurists. Some scholars are of the opinion that separation in marriages whose validity is disputed, such as marriage without a guardian, does not require a judge's ruling. A Muslim must ask the people of knowledge about what he does not know before acting upon it.