If you have no problem with the fees, I'd send her to the one she's at now. You know what it's like and it will save her being uprooted again so soon after moving country. However, having said that, she does have another 2(?) years to go, so if she changes now she'll have plenty of time to settle in at the other place.....
I suppose it depends on her character. I know my DD would probably be best left in one place, which is why I'm quite glad she got the statale as it feeds into the elementare she'd be going to (if I stay in Monza, that is...) so she won't have to face all new people again, but maybe yours is more outgoing and would feel the change a lot less.
Do you really want to do only 3 days? What does the asilo say? I know some nidi privati get quite sniffy about part time attendance ans it mucks up the places they have available (not much vertical part time round these parts, so no kids and no fees for the free days). Also, what if your dream job pops up?