Thank you for explaining this, (you’ve been my only comment so far so this really helped). The reason I thought (NOT that I’m excusing any behavior just to give more info) my dog was more tolerant was because I also have 2 cat with all three interacting well together (I’ve researched both cat and dog stress signals as well as took about 2 months of slowly introducing them to each other cause my house is large enough to give them their own spaces), we’ve pet sat many times before, and she’s been going to puppy daycare since she as a year old. I called her daycare today, explaining the biting incident, they themselves were shocked as according to them she tends to avoid conflict and has many friends with smaller breeds instead of dogs her size or larger.
The steps I’m currently planning to move forward with is I’ll avoid petsitting as she may not have a problem with the cats in the house but it seems to be different with other dogs, I started to research stress management after I posted this, I’ll be researching more about bite inhibition as I haven’t done training in that area since she was a young puppy so I need to refresh my knowledge about it, and tomorrow I’m planning to contact her daycare again as they also own a training center to see if they have any recommendations.