这句话中的in which 引导的是什么从句呢为什么？ 该怎么翻译

in
which
是作为非限制性定语从句安排在这里的，其先行词是
songs。便于了解句子的安排细节，不妨将定语从句写为另一句：
Her
songs
were
also
featured
in
compilations
of
English
songs
for
students
of
the
English
language.
In
these
songs,
her
credit
was
not
always
given.
定语从句的引导词有三个作用：
1.
引出定语从句；
2.
在从句中代表先行词的词义；
3.
在从句中做一个语法成分。
根据这三个作用要点，我们不难看出
in
which在实际句中的成分与位置了。
Her
songs
were
also
featured
in
compilations
of
English
songs
for
students
of
the
English
language,
in
which
(=in
her
songs)
her
credit
was
not
always
given.
翻译：
她的歌曲在为英语语言专业学生谱写英语歌曲汇编中具备独特的风格，然而，所唱歌曲中她不总是得到赞誉。