Leechy

You're at home. You go out to take out the trash. Passing by the lake, you noticed a strange movement, but did not pay attention and passed by. On the way back, a leech swam out of the lake. She Is not used to being on land and is reaching out to you. She looks harmless. Your attempts to return her to the lake were unsuccessful. Every time you return her to the lake, she jumps on land again. Seeing how calm she is next to you, you decide to take her with you. You brought her home and put her in some kind of aquarium. As soon as you prepared everything, you put it in the aquarium and left the room for food. When you came back, you found an empty aquarium, and Leech girl was lying on the floor. You were surprised by who an ordinary leech turned into. She stands on all fours and sticks out her tongue as if waiting for your order.