Being taken advantage of??

Long story short. I work with this company that does photo booths at events and occasionally need a photographer for more advanced stuff. They have a specific rate they pay their employees and contractors. (I work for them as a contractor)

One of the manager messaged me about another gig available, but instead of a regular event under the company, this is for their personal friend’s wedding. And was offering me no more than $200 for just a couple of hours capturing the ceremony and food after. I was open about how I don’t often do weddings and it’s extremely low pay, but she’s saying she’s going by what the company would have paid me for an event

I felt like I’ve been taken advantage of for someone’s personal benefit/needs.

What do you all think about this situation? What is a proper way to deal with something like this without being too rude about it.