I have an 6 year old ridgeback. she had a hernia op two weeks ago. she got discharged three days after the op with drain. another three days later we took her in for a check up and and her vet wasn't happy with a hard swelling on her abdomen. he discovered that there was a re-herniation and re-sutured. two days later she developed a seroma. she is still admitted at the veterinary hospital. is this normal healing? i am very worried. When i visit her, she is active and happy, eating well and passing stools and peeing well.