intervene with (someone or something)
To become involved or embroiled in some event, situation, or predicament. I make it a point never to intervene with other people's personal affairs. I'll intervene with the boss and see if I can get this issue resolved.
intervene with someone or something
to step into a matter concerning someone or something. Megan said she would intervene with the bank manager on our behalf. Do I need to intervene with this process?