My partner is still friends with people who treated me like crap,is this ok?

I'm gay and me my partner have been together for 7yrs. Well, last summer me and her had some problems and seperated for about 5months and now we are back together and have been since Dec. 2010. My partner is friends with people who treated me like crap while we were seperated and doesn't understand why it hurts me that she's still friends with these people, especially because they were part of the problem to our seperation! I tell her that everytime she talks to them on the phone,texts them or comments on their facebook that its like a slap in my face! Am I wrong for having her chose between me or them?(Also she tells me that they are just acquatninces)