So, there's another partner at my store that I guess takes joy from ruining everyone else's shift, but I our SM likes to pick favorites and she seems to be one. The partner in question is rude, lazy, "pushes"(in "" because it's not necessarily pushing, it's more so just they push PAST other partners which results in essentially the same result as if they actually intentionally pushed them) other partners, etc. I'm nervous to say anything because, as I said, favorites are a thing, however I have mentioned the rudeness and sense of entitlement this partner seems to have and the SM said to maybe mention it but then I'm worried the partner is just going to make other snarky remarks and continue her behavior. A partner I've come to consider a friend is, I feel, having an even harder time with this than myself and I'm worried for their mental health. Who can I go to about this issue?