Help with adverbs with とする and としている

Question

Taking yadokari's sentence:

彼女は表情が生き生きとしておりとてもかわいい。

The part that I need help understanding is the relation of 生き生きとして with　表情　and　居る.

Looking up the dictionary entry for 生き生き, it is "an adverb taking the と particle"

(Question 1) Does the adverb modify して? Or is 生き生きとして treated as an adverb as a whole?

EDIT: What is the difference between 1. 生き生きとする and 2. 生き生きとして居る?

(Question 2) Is 2. the ~ている construction of 1.? And what is its significance when used with an adverb? English parsing would be greatly appreciated.

Answer 1

「生き生きと」 is the adverb. 「して」 is the ～て form of 「する」.

"vividly do"

Of course, you need the 連用形 that follows in order to translate it completely, as is given in your other question.

EDIT:

Yes.

居る いる
(v1,vi,uk,aux-v) to be (of animate objects); to exist; to stay; (after the -te form of a verb) verb indicating continuing action or state (i.e. to be ..ing, to have been ..ing); (P)

Same as without the adverb. Only with the adverb instead.

"be vividly doing"