I don't want it to be too heavy, but I also don't think a snub nose is necessary.
Ruger LCR is a possibility, but it's so lightweight I wonder how it would kick compared to say a SP101.
I know of no handgun more difficult to use and control than a lightweight, snubnose revolver.
They don't just kick, they are downright miserable to shoot even with modest ammo.
It would be a VERY bad idea to give a little old lady a small frame revolver.
Stick to a medium frame, 3-4" revolver in .38 special if it must be a revolver.