Well, I opted for #1. Thanks to everyone for the kindness, support and advice. As someone who has lost a sibling to suicide, I couldnt "unsee" the post. As my husband's wife, I felt an obligation to mention it, without drama infusing the conversation, just a brief description.

His reaction was...nothing. He just looked at me and shook his head a little, and said he didnt want to hear about anything to do with her or her life. We did mention that she has said this before during fights.