The sentence "She don't want to go," is

"She doesn't want to go."

Explanation:

Don't is a contraction of do not, while doesn't is a contraction of does not, and they both act as auxiliary verbs. In English, don't is used when speaking in the first and second person plural and singular and the third person plural ("I," "you," "we," and "they").

b. his ability to use formal language to stress strong feelings

a: that she is losing interest in her relationship with arobin just took !