Translation of "closely" into Norwegian

I assume you must be a close friend of Tom's.

Jeg antar du må være en nær venn av Tom.

I watched her closely and was surprised that she read every single line—intently.

Jeg fulgte nøye med og ble overrasket over at hun leste hver eneste linje – ivrig.

This was refined and embodied in a personality so weird, rigid and stubborn that very few dared to closely work with him.

Dette var foredlet og kroppsliggjort i en personlighet så snål, stiv og seig at svært få våget å jobbe tett på ham.