It is all her father's wealth, she bought a flat in Chelsea and doesn't have an actual job. She cosplays being a businesswoman and loves to post inspirational quotes about seizing the day and loving each day which is easy to say when your days literally consist of Barry's Bootcamp, ordering in Snog treats, going out to eat with friends, shopping in Harrods and getting your hair/nails/filler done. This is literally all she ever posts. Oh, and holidays.
Also there seems to be a lot of family money behind making her relevant. I think she's keen to get on Made in Chelsea or something. It's clear her family hired some kind of PR to try to get her into the last season of Love Island cos she teased about it on her stories constantly, and there was even articles in Daily Mail/The Sun about 'Aimee' being someone Love Island was trying to get - when she's literally never been mentioned in any news article before, and is really not relevant at all. Most of the comments on those articles were 'who the duck is this girl' lmao. When she didn't actually end up on LI, she made some flippant post about how the show wasn't her cup of tea and then never mentioned it again so it was clear either her family's campaign failed, or she was in some negotiation with LI and it fell through. Incredibly embarrassing behaviour tbh.
I have no doubt she pulls in some money from PLT and spon posts but not enough to fund that lifestyle and she's awfully disingenuous to act like she's a self sufficient, financially independent adult lmao. Case in point, she had a panic over being defrauded on Airbnb last night and mentioned something about her dad being on the phone to the bank which says it all, daddy's credit card funds everything.