I only just today saw your post/request from 10 days ago, so I expect my message may come too late for your requirements....
Also, I do not have a Sylvanian House to offer you, but I have a collection with several “sets” which may be of interest?
The items are all loose and not in any boxes and comprise of the following:
1 square table
1 tray, teapot and 2 teacups
3 baby cribs
3 baby bottles
3 babies (2 mice 1 mole?)
1 set of parents (mice)
2 big sisters (mice, different colours + differently dressed)
2 big brothers (mice, different colours + differently dressed)
3 sets of toddler twins (mice 2x male, 1x female)
1 toddler sister (mouse)
Do let me know if any are of interest to you?