Она приходила ко мне вчера.
-she came to my place and left afterwards.

Она пришла ко мне вчера.
- she's still at my place.

Вчера она приходила ко мне и приносила мне книгу.
-she came to my place, brought a book but she went home and took the book with her.

Вчера она пришла ко мне и принесла мне книгу.
-she came, brought a book, left, and left the book at my place. пришла can be used eventhough she went home because I want to convey something more important that happened during the time the first action was in course.

Каждый день она приходит ко мне и приводит своего сына.
-every day she comes to my place and brings her son. Both go away afterwards. Does Каждый день demand the multidirectional verbs there?

Вчера она приходила ко мне и приводила своего сына.
-yesterday she came to my place and brought her son, but both of them went away already.

Каждый день я хожу в школу и ношу свои книги.
-every day I come and go from school carrying my books.

Каждый день я иду в школу и несу свои книги.
-every day I carry my books on my way to school. The way I bring them back is not clear. Do I even bring them back?

Я ходила в кино и встретилась с Борисом.
-I went to the movies and met Boris (just one time?), and it's not clear if that happened on the way to the movies or on the way back.

Я ходила в кино встречалась с Борисом.
-every time I went to the movies, I met Boris. Also not clear if that was on the way to the movies or on the way back.

Я иду в кино и встречаюсь с Борисом.
-? I always meet Boris on the way TO the movies?
What if I'm going to the movies now and I'll meet him on the way there, but just once? Can I use сходить?