As it happens, I am extremely PG sensitive.
Okay, here are some ideas. Velvet Cloud Vapor has one called Mewlews Magic that to me tastes more wertherish butterscotchy/caramel type. I don't get any of the other flavors they describe at their site. All of their juices are 100% VG ( pg free ) Some of their other flavors are pretty decent, but I would not recommend their tobaccos.
However, your aunt may really enjoy a decent tobacco vape. For that I could make several recommendations from Heather's Heavenly Vapes. Their Purity line is 100% VG (pg free). HHV has spoiled me, they have so many juices I love. You can also request all VG in the rest of their line, however the flavorings do have PG in them.
Neither of these vendors use the quick mix flavorings like MBV or others of that type. They make their own extractions. Not to knock MBV, James has a terrific company, but it's just a different type of business. So, it can take a few days before your order ships and you may very well need to steep them for a week or two. Though, I personally like most of HHV's right out of the mailbox.