It’s definitely one of the sweetest and cutest moments in the whole story.

Also, there’s this parallel in that Claudia is cradling a doll against her, and Louis is cradling his doll (Claudia herself) against him. Claudia’s and the doll’s face are similar in their direction. Claudia has her cheek in the doll’s hair, and her hand in Louis’ hair, and Louis has his lips in Claudia’s hair. It’s all very cuddly *u*
Someone got it tattooed on them!

More melancholy nonsense after the jump.
In movie!IWTV, the first night Louis spends without Claudia since her turning is the night the Theatre des Vampires separates them, and beats him up. It’s one week after he turned Madeleine, so he may have been sharing his coffin with Madeleine, or alone, but just one week later, he spends the day locked in a metal coffin upside down with no cushioning, stripped of most of his usual comforts ;A;
Children sleep with dolls/stuffed animals for a feeling of safety, protective of their comfort object but also feeling like it can protect them back. Kids sometimes do sleep with their parents when they’re very young (that old, “Mommy I had a nightmare!” thing). This is where the mommy!Louis fanon comes from.
I like the idea that Louis and Claudia were protective and nurturing to each other in a way that Lestat couldn’t be at that time.