Future proof.. ha. It's like anything... it is what you buy and will continue to be that for a long time. It's not like you have to worry about microsuck coming out with a new operating system that requires more from your camera in 6 months.
I have the original Canon Rebel DSLR.. I think it was the first sub-$1,000 camera. It is entry-level but a 'real' camera. I used it a couple of years ago for a professional catalog shoot and it performed adequately for the purpose. I've used it for weddings and various events with no issue... This camera is at least 5 or 6 years old now and still doing fine. I want better low-light image quality and some better flash sync options.
I've wanted a Nikon D300 for years.. which is still pretty much the same camera it has been for years... The digital camera market matured quickly. I haven't seen much new or interesting stuff come out for the past couple of years. However, the 7100 looks enticing too. The important thing is to put your hands on some bodies.
See which ones work for you...
Having had a Nikon 8008s for several years got me used to the Nikon way of doing things... The Canon isn't as easy to control for me... but I'm sure that's different higher up the chain... gotta see 'em. Whatever you or daughter chooses will get learned and mastered. With someone that's young, it's better to 'start somewhere' then worry too much about what will work best.
-C