Unless someone volunteers as a mentor.
Maybe she's not a good teacher
MLeek did that for several months.. and no notable progress was made. Very frustrating for her, I'm sure!
Oh, I am not the only one. Several of us tried. I can tell you that NOW I am probably not the ideal mentor. Then? I spent time helping and explaining 7 ways 'till Tuesday.
However... I'll breathe deep and try this again... Now that I am NOT in the bottom of a wine bottle...
You are quite obviously having a hard time using all 3 elements in full manual. Why not try using the priority modes?
I believe you said you don't have the steadiest of hands, so you know you must have a shutter of about 1/250 or more. You could use shutter priority for a time and practice using good shutter speeds to accomplish what you are attempting.
Put it in Shutter Priority
Dial in 1/250 as your shutter speed.
Start at ISO 100. If your settings blink at you in the view finder you need to raise your ISO up until it stops blinking.
Then spend your time focusing on focus.
When you are seeing what you need and it is starting to have that "AH HA" effect in your head, switch.
Then put your camera in aperture priority.
Set the aperture according to what you want for DOF.
Start at ISO 100.
Watch your shutter speed. If it is under 1/250 you need to raise ISO until you get to at least 1/250.
If you can't get there stop and think about WHY and what your options are to get you there? Can you reduce your aperture? If not then you have no choice but to add light.
These aren't things that you can do for a day or a session and WHAM BAM have it all together. I am talking weeks here. Shoot in one priority mode until you are looking at your kids and you already know in your head that you are going to have to use THIS ISO or THAT shutter speed because of ___________. It could be a year. Priority modes are FINE!!! MANY photographers shoot in them almost exclusively!!!