I posted this on the pre-wedding parties board but thought it might help to get the etiquette professionals on this board's opinions
OP: "Hi- I'm standing up in a friend's wedding this September. I attended one of her bridal showers last month. I received an invitation to a second shower which was to be held the same time my family was visiting/staying with me from out of town. I called the groom's sister (shower host) and left a message that I would not be able to attend and explained my reason. The shower was yesterday and my friend sent me a text saying "are you okay?" I responded "yes, I'm fine. I left a message that I couldn't make it since my family was staying with me. Did you receive my message?" and no response. Now, I'm worried that she's upset. I probably should've called to tell her as well as the host but I didn't think of it at the time. How horrible is this? Should I reach out and apologize for not going?"
I still haven't heard from her, even after messaging her about getting together to go shopping. I'm starting to feel even worse about the situation and am wondering how to go about apologizing.