Thanks for your responses.
She wants to start with basic photography but also use the video feature.
Every other members who suggested the 18-55mm lens are offering you a good advice, however you do not 'have to' go for 18-55mm, you can go for any other lens roughly about in the similar focus length range. For example, you could go for something like 28-70mm, 22-55mm, 17-85mm, whatever lens new or
second hand, you can find in addition to the 18-55 everyone is suggesting. That would give you a wider range of choices rather than facing a choice of buying only the 18-55mm.
Also everyone is suggesting a Canon 18-55mm, but again, you do not 'have to' buy only Canon brand. You can buy any third party brands which make lens for other cameras as long as the lens must be for Canon EF mount. While there are cheaper third parties lens around, better aim for known brand name third party lens such as Tamron, Sigma, Tokina, which are considered to be better, those may be cheaper than Canon's own brand, but they are just expensive than unknown third party lens. They make lens that although seems to be for any cameras, in really the same lens would have a different mount to fit only the right cameras.
Say as an example: Sigma 18-35mm f1.8
EF mount (or it may say 18-35mm f1.8
Canon mount or 18-35mm
Canon EF or some variation) but do not go for Sigma 18-35mm f1.8 F-mount or A-mount or K-mount (or it may say 18-35mm Nikon mount or Sony mount etc) which means the same lens model can only be fitted to only one camera series.
If you opt for third party just make sure you look for EF mount version or one that says 'for Canon'.
That gives you wider choice of lens to think about buying rather than being limited to only a Canon 18-55mm EF lens.
And whatever lens you pick will still be good enough for basic photography.