Final answer:
Hester aims to protect Dimmesdale from Chillingworth's malicious influence by revealing the truth about Chillingworth's identity and intentions.
Step-by-step explanation:
Hester hopes to save Dimmesdale by telling him the truth about Chillingworth to protect him from further manipulation and psychological torment. Chillingworth, who is actually Hester's husband, has been posing as a friendly physician to Dimmesdale while secretly tormenting him out of revenge for the affair between Hester and Dimmesdale. Hester’s revelation is intended to free Dimmesdale from Chillingworth's malevolent influence and lies, and to stop Dimmesdale from being further harmed emotionally and physically by Chillingworth, who has been exploiting Dimmesdale's guilt and frailty.