Both she and Tiffani Amber Neilssen...
...may be rich, but not yet completely rich as both Mark and Mario. Although, it looks like both Elizabeth and Tiffani will have their own successful lives on careers and families. But here are the reasons:
1.) Both were substituted by Leena Creel, who plays Tori Scott, in some episodes of the original class' 5th season.
2.) Elizabeth should never see a single episode of the new class, same thing with Tiffani.
3.) Original fans were complaining that both Elizabeth and Tiffani should have guest appeared in new class episode "Goodbye Bayside (2)". Unfortunately, I disagree. They both refused to guest appear in that new class episode "Goodbye Bayside (2)" because it will endanger both own careers and families. I agree about both this Elizabeth's and Tiffani's correct refusal move and I'm glad both of these women didn't have to guest appear at all either.
Elizabeth is having her own book-writing career and Tiffani is having her own successful cooking career along the way.