For keyboard, just get the rk61 as it's a hot swap keyboard and is pretty cheap. As for switches, I've only tried a few being the akko jelly blacks, the NK creams, and the glorious pandas. Out of those three, the only tactile ones are the glorious pandas, but they can be pretty expensive. For the NK creams it's also pretty expensive and you have to burn them in. The akko jelly blacks is relatively cheap, but seeing that your friend wants tactile switches, I'm not sure if it's the one her.

I'd suggest just buying a small number of a few swithces and figuring out what she might like.