Re: Getting over previous marriage
Yes, you should tell the uploader to take down those pictures as well. You don’t even need to give an explanation if he doesn’t ask you for one. But if he does, then don’t mention your wife’s name. Just say that some of the girls and their families don’t feel comfortable with having the pictures up and therefore you decided it was best to take them down altogether.
Forgive me, but I thought that her lil’ quip about you being with the “love of your life” was funny. I shouldn’t have chuckled, but I did. 
I mean, yes, I admit that her remark was unwarranted. But it makes for good sit-com type of humor, lol. I think you need to sit down at some point with your wife and tell her, “Would you like it if someone were to remind you of your mistakes often? Even God forgives people and you are just a mere human that is taunting another person over and over again for something that was not even a sin.” Please say that to her.
You may have to encourage her to be the first person to approach extended family members at events. We can’t always wait for someone to come talk to us. Sometimes we have to make the first move. Now, if you happen to have a good rapport and strong trust with some of those extended family members, you might be able to talk to them privately and ask them to approach your wife and include them in their activities so that she’s not just moping around by herself in the corner.
I understand that you both divide up responsibilities with your child. But still, taking graduate classes AND managing a toddler is a lot of work. It’s easy to get stuck in a rut where your whole day revolves around work, school, toddler. Then lather, rinse, repeat. Take the time out during the day to make her feel special (even if she’s being an ogre). Compliments alone can go a long way. If things don’t improve by talking to her nor by keeping a distance from her, then you can seek outside interventions.