Sentence 1: Allie had been doing well at her job for awhile. 
 Sentence 3: She and her husband found the perfect home within their budget 
 Sentence 4:  But when they applied for a mortgage they got denied 
 Sentence 5:  Her student loan debt had ruined her credit score for her to qualify 
 Option 1: She had saved up enough to buy a house for cash!. 
 Option 2: As a result her and her husband wanted to buy a house.