Hi Klaudia, look in the baby section in the supermarket & look for Huggies Baby Wipes Cucumber & Aloe wipes; when your girl does a wee wipe around her vagina.. Grass, is she lying on the grass like a frog? Staffys & Pit Bulls have their signature way to lay, front paws stretch out, chest & stomach on floor or grass & back legs stretched out like a frog, the grass could be irritating her stomach… I had a white boxer & she always got a grass rash on her stomach after laying on grass, the dog I have now Patch an English Staffy he has skin & stomach problems when he walks on wet grass he gets red paws, in between toes goes red & up his paws go red I apply Hydrocortisone 1 % cream, very lightly, I check his body every night when he’s sleeping, while your in the supermarket look for Sudocrem baby nappy rash cream, the Sudocrem cream is excellent for any rashes & itch she may get, also certain foods Patch gets red paws, ear problems, itchy skin & smelly yeasty skin when he eats an ingredient that he’s sensitive too…. so start her on a good diet, raw is the best if you can afford it…also baths, bath weekly to wash off any allergens & pollens that may be on her skin/fur….I use Malaseb Medicated shampoo, you could try baby shampoo or puppy oatmeal shampoo that’s very mild, for now I would give a bath, then start wiping her tummy & vagina with Huggie Cucumber & Aloe wipes when she comes in from being outside from doing a wee & before she goes to bed…..My Patches stomach gets red sometimes where his penis skin ends & meets his stomach, wee must hit his pink stomach, he does about 20 wees on 1 walk, so the wee must start burning his skin, I wipe with a baby wipe when we get home & put some Sudocrem on that area, redness is all gone by morning…
If when she is older & starts having skin problems, try changing her diet & see if there’s any change if not then see vet to get a referral to see a Dermatologist, vets love putting dogs on steroids & antibiotics, these drugs are just a band aid & as soon as you stop the steroids & antibiotics the skin problems are back….
