As much as I liked Sonia as a character and Natalie was one of the good actresses of EE. Time has moved on and she shouldn't be allowed to return to the show. In the real world you don't leave a job then go and ask for it back because no-one else will employ you. If Natalie is struggiling for money well she can always go and find a normal job to pay the bills.
This is why I am against soaps employing young actors/actresses with no acting experience as they do a couple of years in a soap, leave because they think they will walk into a hollywood blockbuster. So many have sunk without a trace since leaving a soap. Spencer, Demi, Jamie. The same goes for Emmerdale why do you think Katie came back because she has no proper trainning.
If Natalie is serious about acting then she should go back to drama school and learn how to become a good actress. Soaps need to stop taking on people without proper training other wise many more are going to find themselves jobless and talentless.