Perhaps it's a symbol of something in the cartoon, or it's just a random and amusing image the creator came up with. It could also be to show the girl's enjoyment or playfulness with food.
It could be for a comical effect, to catch people's attention, or maybe it's related to a story or theme where food plays an important role. Different artists have different reasons for such depictions.
There could be various reasons. Maybe she saw something unexpected and is covering her mouth to keep quiet. Or it could be part of her character's mannerism to show shyness or surprise.
Maybe she's about to speak or express something.
Maybe she's sad about something that happened and doesn't want to show it too much.
Maybe it's to show a funny or exaggerated moment. Sometimes cartoons do that for entertainment.
Perhaps she's heartbroken over a failed relationship or facing a difficult challenge that's overwhelming her emotions, causing her to react this way.
Maybe she's sad about some event or situation happening in Egypt that has touched her deeply.
Maybe it's to show a common and enjoyable food moment. It could be for fun or to catch people's attention.
It could be to make the girl's expression more ambiguous and leave it up to the viewer's imagination. Or perhaps it's a symbol for something the artist wanted to convey but didn't want to be too obvious.
Maybe she's had a really sad event happen to her, like losing someone close or failing at something important.
Perhaps it's a symbolic representation of something. Maybe it shows a character's struggle or a dangerous situation. Or it could just be a crazy idea the creator had for attention.