Awesome wife!

I wouldnt recommend the flux core machines, intact I strongly suggest you avoid
them. I have a Lincoln 135 and it is a very good 110 machine that uses gas for shielding.
I have used millers and they weld nice also but didn't have as quite as nice of liner or trigger.
Never tried a Hobart but if you stay with one of these brands with the gas shield you will be happy for decades with your machine.
If you need to weld a thicker part 3/8 or 1/2" thick and it is not a long run (under 8"s or so)
You can pre heat the part with oxy acet. torch to get the penetration and multi pass.
These small welders are very handy for working on our mopars and easy to learn.
You will wonder how you got along without one.