If Aunt Betty had been a Christian, that would be a true statement. Aunt Betty may have been a faithful church-goer, but that isn’t what determines her eternal state. There are lots of unsaved sinners sitting in churches on Sunday mornings. And many who thought they were Christians will be surprised to find themselves in Hell (Matt 7:21).
If Aunt Betty never believed in Christ, never repented of her sins, was never baptized, then she isn’t in a “better place,” but is certainly awaiting God’s judgment. Regardless of our sentimental feelings for loved ones, God plays no favorites (Eph 6:9). His plan of redemption involves our becoming “conformed to the image of His Son” (Rom 8:29), not just being a “good” person, who attends church and doesn't smoke, drink or swear. Jesus said:
“The one who listens to you listens to Me, and the one who rejects you rejects Me; and he who rejects Me rejects the One who sent Me.” (Luke 10:16)
Regardless of how kind someone may have been to others, if he or she was not “in Christ” at the time of death, they are doomed