Growth-spurt.
Feed her.
Or it is teething, which crops up at about this age.
Or gas. With gas pain, they cry/scream in a very tense high-pitched manner. And hysterical. Being 'upright' helps the gas pain. Maybe that is why she liked when your Hubby carried/walked her around. Gas pains are worse when lying down.
Or it is ALL of these things. Many times, it is several things going on at the same time, for a baby. Tweaking them.
How come you cannot get her to nap during the day just because you have a 3 year old?
My eldest, was 3 almost 4, when I had my second baby. We ALL napped at the same time. My Eldest, would nap in the afternoons, when her baby brother was also napping. And then I got rest too.
I breastfed also.
At growth-spurts, a baby's intake has to keep up with them. If not, they are hungry all the time. Crying it out, will not solve that.
Also.. babies do what is called "Cluster feeding" which means they also need to feed every single hour. Normal.
They are growing and changing so rapidly.
My kids as babies, woke about every 2-3 hours, all night. Sometimes more often when having growth-spurts. They had GINORMOUS appetites. Yes, it is tiring. I don't know how I survived.
I really don't.
MAYBE your baby is teething.
BOTH my kids, started teething at 6 months, AND had major growth-spurts at that age too, AND were hitting major developmental milestones at that age. So, 6 months was a rough age... for me. Because a lot of things were tweaking my kids. It is hard for them too.
It will pass.
Or have your Hubby give baby a bottle of pumped milk and have him do the night duty.