Question Author
Update: vet check OK for tum - vet says not to worry about grass eating some dogs just do it because they like it and tummy rumbling isn't anything to worry about - but there may be a problem with the blister. Lab tests will tell - fingers crossed.
Still, there are occasions when I'm sure she's feeling uncomfortable, especially when she's got at something she shouldn't (still feeding birds this awful weather so plenty of pickings) so I like the idea of mints Sir Alec - nice and portable - but I don't want to give her sugar and the latest Dog's Mag. said artificial sweeteners can be toxic. She'll just have to suffer for her pleasures like the rest of us. LOL.
Thanks for your input everyone, lot of good suggestions there.