This isn't about the woman or her husband, more about Reddit and its users.
In this part she has a genuine concern about what her husband is up to.
In this part she finds out the girl is the daughter of the husband from when he was younger.
Clearly everyone has different advice to give depending upon what they know of the situation.
I only bring this up to illustrate the madness of crowds/groupthink/peer pressure and how it influences acceptable choices at any given moment via upvotes and comments.
This is applied to modern journalism regularly to get clicks and increase advertising revenue, which in turn can be funnelled via corporate and political motivations.
Easy example of something more sinister.
She didn't need to be manipulated into doing that, but she's certainly not going to turn down the validation of having a bunch of clapping retards encourage her bad behavior.
If she had not gone to Reddit, would she have taken the actions she did?
To be charitable, I am going to say maybe as I do not know her personally and this is a single instance of viewing her behavior, though her ability to jump to conclusions and not communicate with her "perfect" husband do not bode well. She is also young which is also not helpful for making wise or measured decisions.
I do believe that people can be led to stupid choices with enough social pressure, and Reddit is nothing if not a bastion of conformity. Throw in the Reddit penchant for drama and you get the "OMG ur hubby is pedo, divorce and run kween!" response rather than "that seems bad, you should talk to him but let someone know where you are just in case".
She probably would have confronted him sooner, and not tried all that smoothbrained Reddit subterfuge bullshit, if she didn't have the clapping seals to distract her.
Which would have been better as they could have cleaned it up sooner and the husband wouldn't have so much cause to worry she's a schizo psychopath.
I swear Reddit drama whores are only feigning safety concerns when they're always like "don't confront them!", they just hate having their little front row true crime fantasy ruined by people explaining themselves and de-escalating.
On the other hand, hiding your secret long lost lovechild from your wife for half a year because you didn't think they could handle it because of "wedding planning stress" is borderline retarded. Tell her before you get married ya dumbass, if she loses her shit because she's stressed over something pointless, then congratulations you just dodged a bullet at the last second. Don't wait until it's too late to back out cleanly to find out she's a goddamn loon.