Should I contact her? I just applied to a company and found out that the sister of my cousin by marriage is in hr there.?

We started facebooking after a summer bbq a few years back but we never like each other’s status or contact each other in any way. I don’t know her that well. I’m worried about family conversations. Should I instant message her? What if that is a conflict of interest for her? Or am I just over thinking this?
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