I personally would go with Fuji X series if I was in your position. Awesome lenses, smaller form factor, and tons of room to grow into it as a hobby. Entry level DSLR's aren't anything special and the Sony A6xxx series lens selection sucks, you'll just want to replace it with a A7 full frame camera once she gets into it.

Get an XE-3 with the 18-55mm Kit lens as the gift. Then pick up a used prime or two (60/2.4 Macro, 35/1.4, 35/2 or 50/2).