K.L.
I am so sorry you are struggling. I can only tell you i am a child of a similar situation. my mother and step father had 8 of us between them it was a rough road but i am so glad they pulled through. my step father was speraticaly employed and unfortunately it is still that way my mother after being a stay at home mother for 12 years had to re join the workforce and is the main breadwinner these days. they have been married 19 years. and she has worked all but 2 of those years. it is a hard road but they truly love each other and with prayer and patience i think got them through.
we were ages 14years-18months old and it was just hard.
I cant imagine what what it was like for my mom but for me it was wonderful to see a loving, grounded relationship. although it was crazy with 5 boys sleeping in a tent in the yard all of us trying to share 1 bathroom not to mention meal time, our parents helped us have a scene of teamwork a feeling that we had to work together to make it and we did. now we are all grown with families of our own, there are still sibling issues at times but nothing more than biological siblings would deal with as well. My parents now have the time to enjoy each other. it worked backward and i guess they were willing to wait for that. There were a lot of mistakes made in trying to rear each others children for sure but I'm glad they stuck with it.
this is just my experience only i hope it will help.