Sure! Here’s a simple drawing you can show her — or copy onto paper.

```text
                 sunlight ← ← ←     ☀️ SUN     → → → sunlight

        SUMMER in the North                 WINTER in the North
     North Pole tilted TOWARD Sun        North Pole tilted AWAY from Sun

              N                                  N
             /                                  /
            /                                  /
           🌍                                 🌍
          /                                  /
         /                                  /
        S                                  S

  Sunlight hits more straight-on        Sunlight hits more slanted
  Days are longer                       Days are shorter
```

**N = North Pole, S = South Pole.**  
The slanted line through Earth is its **tilt**. Earth keeps the same tilt while it goes around the Sun.

You can say:

> “Earth is tilted a little. When the half of Earth we live on leans toward the Sun, we get more direct sunlight and longer days — that’s summer. When it leans away, we get less direct sunlight and shorter days — that’s winter.”

If you live in the **Southern Hemisphere**, just swap summer and winter. Also: it’s **not** mainly because Earth is closer or farther from the Sun — it’s because of the tilt.