Jessica`s so smart woman. Jessica`s a so  smart woman.皆誤.so要改成such.但so後已加 adj.再接名詞woman.不可嗎？或因smart woman為形片？

Usage compare such and so  eg:-so--that, eg:-Jessica is "so smart a woman that" her intention is always clear on her duty.in a smart way.---adv cl.
hence 3 eg:-
(1)Jessica is such a smart woman.(adj+n;no adj phr)
=A woman as Jessica is so smart-----adj phr.
(2)Jessica was such a smart woman.
---so=adv--to such a degree,eg:-She is so smart(=very smart)
=Jessica was so smart a woman------adv phr
(3)Jessica is such a smart woman.
---so=adv--to such a degree, eg:-Jessica is so smart(=very smart)
=Jessica is so smart(=very smart)that she could do something.---adv cl.
=Jessica is so smart a woman----adv phr.

Following are copied from Cambridge Dictionary (English Grammar Today):
We don’t use "so" before an adjective + a noun (attributive adjective). We use "such":
example-
She emailed us "such" lovely pictures of her and Enzo.
Not: … "so" lovely pictures …