A few months ago I went to two hen nights for a woman I didn't know well. My husband was best man to the groom and was going to be fully occupied at the wedding including eating with the wedding party. As I didn't know anyone there the bride very kindly invited me to her hen nights so that I would know a group of people at the wedding. The first hen do was a drinking night with a pub crawl and clubbing and everyone was dressed for a night on the town I.e. legs and / or cleavage out. The second hen do was in a spa. I had a great time and got on well with the other hens and spent time with two in particular who seemed to have a similar sense of humour. At the wedding I sat on a table with a couple of the women and thought the evening went well. However last week my DH was invited out for a meal for his friend's birthday but was asked not to bring me as the group thought I was bitchy. I called up the bride to ask what was going on. She revealed that I had really upset one of the hens at the wedding by a flip comment I had said namely "I didn't recognise you with your clothes on". I had just meant that we had all been in revealing clothing on the night out and in swimsuits and towelling robes at the spa but she took it to mean that I was criticising her clothes on the night out. She spent the night of the wedding in tears when she got back to her room. She has just been through a traumatic divorce and apparently has been wearing a different style of dress all the time not just on the hen night. I honestly didn't mean to be critical I just thought I was making a silly comment but I can see why she thought I was being bitchy. Also on the night out we were making comments along with another friend about other people (mainly the men) in the club some of which in the clear light of day were not kind (e.g. Trying to guess who was wearing a toupee or had plugs).
I won't be attending the birthday party but want to send apologies (the bride doesn't think I should speak to her in person). I'm not sure what to say though. I'm really sorry but do think she is overreacting a bit. This happened in May and it still appears to be raw for her. What should I say and should I write a note or send apologies via my DH?