<human>: As a bit of background, my friend Heather and I are really quite close. We have known each other for a bit over a year but we bonded quite quickly and are overall very comfortable with each other. She is easily one of my closest friends. Unfortunately our biggest divide is politics where she is VERY politically charged. I am less so but often vehemently disagree with her views (I am being intentionally vague on our stances because it is irrelevant to the story). We have gotten into multiple fights over politics and typically attempt, for the sake of our friendship, avoid the topic and we are usually pretty successful. 

Now onto last night. Heather and her mother (whom I have never met) invited me out to dinner. I intentionally wanted to keep the topic off of politics not only for obvious reasons but because I figured if Heather was politically charged, her mother would be the same or more so (regardless I didnt want to find out) but inevitably after about an hour the we found ourselves on a political topic. Oddly enough heather's mother and I actually agreed a lot on much of what we talked about. After about an hour of debate Heather was clearly uncomfortable that she was the only one on her side and wanted to stop the conversation. Her mother and I immediately stopped the conversation and that was that. 

Or so I thought. This morning Heather sent me a text saying that her mother and I upset her last night and that we hurt her feelings. I replied that It is more or less inevitable that we will have heated arguments because of our differing world views and that we need to not take disagreement personally and I understood why she might feel upset because I have been in a similar situation before. Now she essentially wants me to apologize saying we "ganged up" on her but I feel as though I have nothing to apologize for. No personal attacks were made. No insults were used. We immediately stopped the conversation once she expressed she was uncomfortable. I fail to see how she was ganged up on. On the one hand I want to just apologize because we are close friends but on the other hand I dont want to apologize for simply expressing my views once the topic got brought up.

Can you summarize the given text in a few sentences?
<bot>: Close friend feels as though her mother and I ganged up on her over a political topic and wants me to apologize. I dont understand how we ganged up on her and feel as though I have nothing to apologize for.