I had the same issues with this level too. I bought Uncle Nunzio the CD (which stops him from bothering the court) and then bought the AC, statue and vacuum for Angelina (which stops her protest). But the problem is, even if you do all these things, and then get back to the court on time so it'll solve Nunzio's zoning problems, there doesn't seem to be enough time after that to get Elena's health, harmony, etc. up high enough so that she can handle roller skating with Elio. I kept losing the level because of that. Once I basically ignored Nunzio's problems, and just focused on keeping Elena's life "balanced", I won the level.
Hope that helps.