The legal terminology may differ from country to country, but in the UK and most places that I'm aware of, in divorce law there is a *petitioner* (the one who asks the court for a divorce) and a *respondent* (the other party in the divorce). Historically, the petitioner is the one who has *grounds* for requesting the divorce - for example, because the other party has committed adultery. This is changing in some places - the UK is moving to allow 'no fault' divorces which would allow divorces where both parties agree it is nobody's 'fault'. But where parties don't agree to a divorce there would still need to be a petitioner and a respondent.

So, when someone says, for example, "*she divorced her husband*" it does sound like the woman was the petitioner with a complaint against her husband, because when '*divorced*' is used as a verb it is done *by* someone *to* someone else.

Expressions like "*they got divorced*" or "*they got a divorce*" don't imply any fault, but persons used to hearing that someone was at fault may consider them to be ambiguous rather than imply there was nobody considered at fault.