Is it proper to say “她给我帮助”？
Since 帮助 itself can be a verb for 'help', you can simply write:


[1. 我的中国朋友][2. 帮助][3. 我][ 4.写(omit 我的)中文文章]

[1. subject][2. verb][3. object][4. relative clause ]


  If you use 帮助 as a noun for 'assistance' then the structure would be:


[1. 我的中国朋友][2. 给][3. 我][4. 写中文文章的][5. 帮助]

[1. subject] [2. verb] [3. indirect object][4. adjectival clause for the direct object][5. direct object]


  The problem with 我的中国朋友给我帮助写我的中文文章 is the placement of the adjectival clause for the direct object.  


[1. 我的中国朋友][2. 给][3. 我][4. 帮助][5. 写我的中文文章]

[1.subject][2.verb][3.indirect object][4.direct object] [5.adjectival clause for the direct object]


  It should be placed before the direct object with the possessive particle [的]


[1. 我的中国朋友][2. 给][3. 我][5. 写(omit 我的)中文文章][的][4. 帮助]