My business trip to Singapore

I went to Singapore for business purpose.
My manager booked one room only and I have to live with her. She was all good until one night I went down to the hotel lobby to have a call because I don't feel comfortable to have she around while I'm calling. She started to be mad and yelled at me through phone later. she said I can not go out alone, "you are here to work but not for fun! "she said.
Well, I had to go shopping with her for two days and she bought LV, I guess this is not fun for her.

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My Business Trip to Singapore

I recently accompanied my manager on a business trip to Singapore. She only booked one room for the both of us.  Everything was fine until the night I went down to the lobby to make a personal phone call. I just didn't feel comfortable with her listening in on my conversation. She got very angry about my absence and called me later to say that I was not allowed to go out alone. She said, "You are here to work, not for fun!"

The next two days I had go shopping with her and watch her Louis Vuitton purchases. I guess she does not consider that to be "fun".

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I just want to comment on your use of the phrase "She was all good ...".  This is a very casual idiom that you might hear in spoken conversations (e.g. "Hey man, it's all good."), but is not correct grammar and is not appropriate in formal writing.

My Business Trip to Singapore

I went to Singapore for on a business trip purpose.

My manager booked one room only and so I have to live share it with her. She was all good until one night when I went down to the hotel lobby to have make a private call. because I don't didn't feel comfortable to have she around while I'm calling. She started to be became mad and yelled at me through the phone later. She said fumed  that I can not cannot go out alone. "You are here to for work but and not for fun!"she said.

Well, Then you know what? I had to go shopping with her for two days and she bought a LV. I guess this is not fun for her Of course this is not fun for her!  She was not alone! [這样寫法, 強調更有效 :) ]