please help me...

so today, there was this girl, and i called her corny, and she got all angry about it and was yapping back and forth and being cringy and all, but she took this way too far. like she literally body shamed my cat. he has a health issue (i forgot what it was called 😭🙏), but it makes it hard for him to burn his calories. my family also buys the healthiest food brand for him. she said (or something similar to bc she decided to delete her comment about by cat) "damn does your cat have diabetes. feed him some real food instead of that junk" my family gives him the healthiest food he could it thats not a million dollars for a meal my familys not the richest.Ill add the screen shots in the comments but tis horrible bc she deleted the comments after i told her to not shame animals and called her inhumane for it.