This is very trivial, I know, but wanted advice as i don’t really know what I should do.
Close friend has asked if me and DD want to go to the circus with her and her DC. I’ve said yes, sounds great and DD will like it (even though I’m iffy with clowns).
Close friend has then told me that her friend “Emma” is also going, it was Emma’s idea, and she asked close friend if she wanted to bring anyone, so close friend asked me. I don’t like Emma at all, she always seems to muscle in on close friend whenever I’m there, almost like “she’s MY friend, not yours”. I’m aware of how childish this sounds 
I think close friend knows I’m not a fan of Emma, but i’ve never said outright that I don’t, as I know that some people just don’t mesh well, and it’s no skin off my nose if we don’t like each other- however I’d rather not spend time with her.
If I’d have known Emma was going to be there I would have made an excuse and sat that one out, but I’ve only just found out that she’s going AFTER I’ve said yes.
Should I suck it up and go, even though I won’t enjoy it and dislike the company? Or make my excuses and leave it?