Here's a switch: SHE'S the one being revolted.
Panel 1: Annie reminds us that Lynn idolized Schulz by exclaiming "Good Grief" before she asks Elly if she's seen the personals ads.
Panel 2: She's up in arms because it looks to her that it's all swingers looking for partners.
Panel 3: Elly reminds us why she was dead set against Connie placing an ad like this by pointing out that she hasn't the courage to do anything like that; she then asks Annie if she would.
Panel 4: Her answer: "certainly not"; for starters, she'd have to lose about twenty pounds. Since she didn't say she would have sat on her ass and hoped crap would happen, Elly shows us what the Triangle of Horror looks like in profile.
Summary: Elly needn't have worried that Annie would be bolder than she is; this is, of course, a woman who blamed herself for her husband's roving eye.