You have been given good advice by BM and KML above, take it to heart and keep posting.
It's also best to keep your families out of your marriage issues. I know the cat is already out of the bag, but you don't want to have them against her, because that will make it harder for her to return. Find one or two people you can confide in who will keep their mouth shut, and only tell everyone else bare minimum, general information. "Thank you for your concern, yes we are working through some personal issues", and then move on to the next subject.
As for GAL while caring for your kids, do you have any hobbies you enjoy? Maybe something that can include the kids? You need things that will keep you busy, and that you find interesting. How about getting a sitter? You need to get out some on your own or with friends too.
M: A really long time. Crisis: 5 years. She's still worth it.
Life is never made unbearable by circumstances, but only by lack of meaning and purpose. -Viktor Frankl
