Gres thats very impressive then. She must have been on generous allowance(s). I.e. between her sponsors getting several thousand a month.
The best a pure jinetera without sponsors is gonna make is 2kish average a month. The expenses are simply too high between the clothes, the hair, the taxis, the cover charges, the minimum consumption charges etc.
30 x $100 is about the maximum in come = $3,000 (Very unlikely this distribution of all $100 but I figure its possible if you get a few stupid ones)
Covers = 30 x 10 = $300. Some covers are $5 but others are 15 or $25.
Taxis = $15 x 30 = $450
Throw in some hair (extensions, keratina, nails, clothes etc.)
They also probably don't work 30 days a month. (As there is a time of month that would make business a little more complicated)
Even those numbers are pretty generous. I had once heard a story of a Cuban jinetera on a $6,000 a month allowance. It would be a situation like that which would allow for buying an expensive home in Miramar. Of course its possible that a girl could've saved $1,000 a month for several years and bought something many years ago. I've heard of plenty of girls working in Havana and then going back and buying a house in their smaller town or provincial city.