You should be able to see the blocks with slits in them, these are stairs, click them and make Ro and her child climb up the green monument.
When you can go no higher, look out for the green vertical block with three holes, slide this down to all Ro and her child to make it up the final bit of this monument. At this point they will split up but continue their adventure together.
Remember at all times you are actually just controlling Ro, her child will copy what she does.
The next part is a really lovely design, tap the highest point of the block that Ro can get to then rotate it so a path forms to Ro and her mother, tap her for Ro to go to her mother.
Now get Ro to as far as she can go along her path, slide the object with three holes towards her, walk her on and take her across. Take it back again without Ro on it and her child will follow and step onto the red block.
Next take ro to the end, this will take her child to the red block and a door will appear near Ro, tap into it to take her through it. Tap no the opposite end of Ro's path and her child will follow and go to the next red marker.
Then take Ro back to the circle marker, her child should noe be standing on a rotatable object, rotate it and walk ro forwards so her child can cross, then take them through the doors, her child will just follow.
This next section is a bit tricky and may be hard to explain, if you are stuck we recommend that you view the accompanying video. Remember you are always controlling Ro.
Rotate the bridge and get Ro to the first marker, then take her back down one flight of stairs this should have moved her child onto a movable block, slide this down, tap again the marker for Ro to go to, her child will go to her's as well.
Now take Ro back down all stairs, rotate the bridge, take Ro across and down more stairs, rotate the bridge again and go out through the exit at the end of the bridge.
The final bit is super easy, just rotate the block with the holes in it at the middle of the monument so Ro's child can go up the stairs and be reunited with her mother.
You will need to make a star again like last time, just make a rapid circle with your finger above the monument.