I assume this article is written for a regular working day. The article's cohesion and coherence are good because the writer has organized by timing from 9 am to 5 pm which is a well organization of time.
the use of articles is not bad except for one mistake (have a coffee) where he can say (have coffee) or (have a cup of coffee) .
the use of prepositions is mainly good.
he has a mistake in the possessive pronoun (his boos) he should have written (her boss) because he is talking about a female's day not about the boss.
the use of vocabulary is not very bad and the building of phrases is good but he should have written (take a break) instead of (make a break) and (responds) instead of (correspondence).
i see the spelling and the word order is fine except the spelling of the word (coffe) should be (coffee) and not adding the (third person s) to verbs like (she carry on, she start , she make , she go on , she keep)
i think the writer is combining the present continuous with the present simple, i think since this is a daily activity for the woman that repeats almost everyday , he should use present simple more often.
Ordering events, articles and prepositions are the strength of the writer ( student). However, the use of grammatical tenses can be the weakness of the writer (student).
My recommendation for this student is practicing his\her grammar more often to be able to differentiate between the all the tenses because in this article i found the mixture of present simple and present continuous while writing. Since this article is about the daily work, it should be written by present simple and avoid present continuous.