What is the nature of Thea elvsteds relationship with lovborg?What gets in the way of their happiness together?

Mrs. Elvsted is meek where Hedda is strong, and acquiescent where Hedda is defiant. She is in love with Eilert Lovborg, and is terrified that his return to town will cause him to relapse into alcoholism. She comes to Hedda for help even though she is suspicious of the new Mrs. Tesman (when they were in school together, it seems, Hedda was cruel to her).