Day 11- Wow, what happened to my big girl?

So today was the day where I have my two girls all alone...What a day! So Catherine did not sleep well at all, was up early and woke up Christina. She then decided to wake me up...at 6:15AM! Catherine was so tired that while eating her cereal, she almost fell face first in the bowl. So we sent her back to bed...which ended up a battle of epic proportion! She did not fall asleep right away and fought for over 1 hour...until she pooped in her diaper. I went to change her and she fought again, until finally falling asleep until 10:45AM. Christina had time to have two feedings during that time.
Catherine needed redirection all day. We got lunch and then tried to relax playing and watching Barney, the episode about doctors and dentist for the 77th time in the past month (I kid you not). Christina during that time was chilled...until Catherine leaned on her...which prompted my loss of patience. I then decided we needed to go somewhere. Christina decided that the "trauma" her sister gave her led to hunger bang. Time is 1:05PM. After eating, we then prepared to leave. We finally got to the car at 1:40PM. Christina struggled to sleep, Catherine just outright refused, despite bags under her eyes.
We went to see Cindy's work, which brought the woos! and ahhhs! from everyone for Christina. Catherine definitely felt lonely. She also stumbled to the ground 3-4 times due to being tired. We tried to sleep while driving to a mall, which did not work well for Catherine. Christina fell asleep though...until Catherine fell asleep...which prompted Christina to wake up out of hunger...I swear, they work as a tandem on these patterns. I think they are already have some devious plans going. Can't wait for them to really scheme. Catherine had to be removed from the mall and was refusing to sleep on the way home. She poopied at the end of the day in the pottie which made it all worth it. Seriously, this was a long day, where I was low on patience, high in frustration, and unsure how to deal with all of it. Christina was good, cooing, making faces, and smiling all day. I get to wonder "Where did  I go wrong ?" and I know it's irrational but hey, don't tell me you don't understand. It's tough. I so admire single parents and wonder how in the blue hell do they do it?