In "Cardcaptor Sakura", what is the relationship between Sakura's mother and Tomoyo's mother?

In "Card Captor Sakura", Sakura's mother's real name is Amamiya Nadeshiko, she is the eldest daughter of the Amamiya Zaibatsu, and she is cousin to Tomoyo's mother, Daidoji Sonomi. After marrying Kinomoto Fujitaka (Sakura's father), Nadeshiko was named Kinomoto Nadeshiko, so-called "taking your surname and taking the name Wu".

As for Sakura’s mother, she did not appear or mention it at the beginning of the animation. Later, Nadeshiko’s personality and some things that happened in the past were described to the audience through the memories of Sakura’s father and Sonomi. Kinomoto Nadeshiko looks very beautiful, with long dark gray hair that curls like waves and hangs down to her waist. Probably Sonomi missed Nadeshiko and asked Tomoyo to keep the same long hair. Nadeshiko has gentle eyes and a bright smile. She likes sweets and black tea, and likes to bask in the sun and watch rainbows.

But Nadeshiko’s athletic ability is extremely underdeveloped, which is exactly the opposite of Sakura. Nadeshiko is a cute woman who can stumble even when walking on the ground. She likes to sleep and can fall asleep anywhere. There is an attribute that everyone envies: no matter how much you eat, you won’t gain weight!

The meeting between Nadeshiko and Fujitaka is also very romantic. Once, Nadeshiko climbed up a tree to send a bird back to its nest. As a result, she accidentally fell from the tree and landed on Fujitaka who was lying on the lawn. Fujitaka smiled and said, "It was as if he saw an angel falling..." ..."

Fujitaka and Nadeshiko were in love between teacher and student. Although they were happy after marriage, they were both happy. Nadeshiko passed away when Sakura was three years old, so Nadeshiko’s family, especially Sonomi had a very low opinion of Fujitaka, and it was only later that she slowly let go.

Regarding Nadeshiko’s ability, Sakura’s father in the new episode said that Nadeshiko can see things that others cannot see, and this ability has also been passed on to Toya and Sakura. In fact, Nadeshiko has been watching the Sakura family tenderly from behind, and she is a brilliant presence. Sakura's mother and Tomoyo's mother are cousins, so are Sakura and Tomoyo cousins?

That should be considered.

They are still good sisters. Tomoyo is a very interesting character, with a 100% appearance rate, second only to the protagonist Sakura. Tomoyo likes to be with Sakura very much. Her biggest hope is that Sakura can wear the battle suit she made and help Sakura take photos (Tomoyo is good at photography). Therefore, Tomoyo's biggest problem is that she cannot take photos of Sakura's "brave" attitude". Tomoyo is very considerate and can often understand the other person's inner thoughts; she was the first to discover Syaoran's love for Sakura, and often encouraged Syaoran to bravely confess his love to Sakura. Tomoyo is a good girl who feels happy when she sees the person she likes happy, and the person she likes is Sakura. Everything she did in the plot was for Sakura, and she often came to Sakura's rescue.