WTF.....I had to look this up, Well all she has done has "applied" this does not mean she will be approved for intervener status.
Intervener:
Someone not originally a party to judicial review proceedings who by order of the court is given status to participate in the proceedings either as a full party or with more limited rights.
A third party permitted by a court to make arguments in a case. Interveners are sometimes referred to as "friends of the court" (amicus curiae), or as public interest advocates. Frequent interveners in Canada include the Women's Legal Education and Action Fund (LEAF) and the Canadian Civil Liberties Association (CCLA).