[AngelicaDeAlquezar]

"Junto a" means "next to", it describes something or someone that is close enough as to be side to side with something or someone else.

In the song there's no indication to know where she is physically; if she's in a car or a public bench, or if she's standing or sitting down on the floor crying. "Junto a la estación" just means that she'll be outside the station, but quite close as to be near the walls or the entrance. She wouldn't get away from it or go inside; she'd just cry nearby.

The person who fell "junto a la pared" just fell down very close to the wall, next to it.

Some examples:

- Mi casa está junto al parque.
My house is next to the park.

- Un señor venía caminando junto a mí y me robó la cartera.
A man was walking beside me and he stole my wallet.

- Pon las plantas junto a la ventana para que les dé sol.
Put the plants next to the window so they can get some sun.

- Quiero comprar una casa junto al mar.
I want to buy a house near the sea.

- Ven, siéntate junto a nosotros.
Come, sit down with us.

- El cementerio está junto a la iglesia del pueblo.
The cemetery is next to the town's church.

- Estacioné el coche junto a un hidrante y me multaron.
I park the car next to a fire hydrant and I got a fine.