Advice about online/app dating?

My wife recently started looking into online/app dating; we'll have to see where it goes and what she likes and doesn't like about it, but it is a super exciting new development in our relationship. We both would like to understand better what best options are out there. I think she is likely to present herself as either married and cheating, or as a single cougar, or as 'married but available' (without specifying why). That is, I'd be surprised if she opened, with 'my husband is a cuckold'. So, given that she's likely to pursue a range of things between conventional dating sites and hookup apps, but with the idea that she's a hot older woman interested in younger guys, where would you steer her?
darslangly