Should I go to a holiday party that a toxic person has invited me to, just this one time, to avoid retaliation from her?

I have significantly distanced myself from her over time but family member told me if I decline 100 percent of her invitation (she tends to send out excessively), she may retaliate, so I should go once in a while.

I struggle with this advice for a couple of reasons:

1). It breaks consistency when I want her to let go completely of her expectations of me.

2). I have not been able to avoid (passive-aggressive) retaliations from her anyway, even when we were close. I could never please her, as when things didn't go 100 percent her way, she would hold it against me.

But the point my family member was trying to make was that the toxic person's behavior may escalate if I decline all of her invitations.

How can I not compromise or give in on my determination to continue distancing myself from her and stay safe?