About 2 years ago I started a new office job and was lucky to be put into a team with some great women, my own age who I have a lot in common with. I really hit it off with two of them in particular and we would socialise outside of work. I would class them as close friends not just colleagues.
About 6 months after I started another lady, let's call her B, came back from maternity leave and it became clear quite quickly that her nose was very out of joint with having a new person - me - in the team especially because I get on so well with the others. I know there was a bit of bitching, coldness and B trying to instigate a lot of gossip about my private life. I tried to be the bigger person and ignore it. She's done a few things to try and embarrass me too.
Now we are all working from home we have a WhatsApp group chat with the whole team to keep in touch. I felt that B was either ignoring anything I put or picking fault and starting debates over it. For example the recent BLM protests.
I got sick of it so I've just started ignoring her. I've never done anything to her to deserve this obvious dislike. As soon as I stopped engaging she started messaging me privately asking if I have a problem and being really nice! I just don't know how to deal with this school playground stuff. It's hard for me as she is part of my team and has known the others a lot longer than me. I don't want bad feeling when we eventually go back to work but she is pissing me off with this childish and petty behaviour. Wwyd?