Complex sentence: Primula hugs Rin and holds her arms around him (all the way to Rins home) when they first meet, while Primula finds it hard to express emotions Primula was deeplly happy to finally find Rin.
Split into simpler sentences: Primula hugs Rin and holds her arms around him (all the way to Rin's home) when they first met. Although Primula finds it hard to express her emotions, she was actually very happy to finally find Rin.