[BabyChance]

I've gone over this a few times in my head and decided to write it out and see what you folks think...
We have a neighbor we've known for 15 years; both she and her husband are retired police, as my partner is...
When we had our first Yorkie (RIP), they had a Great Pyrenees (also deceased), who, in spite of the size difference got along famously.
Now they have adopted a female Pit, who seems like a nice enough dog, though 'Jane' has had more success training her than her husband has.
When our 10 month old Yorkie, Chip, was just learning to walk on the leash, 'Ruby' came over, sniffed him and tried to pick him up...all normal...but we understood that Ruby was much bigger and probably not a good playmate.
Today, on our daily walk, we ran into Jane and Ruby...specifically, we were walking on the path and Ruby ran through a stream to get to us.
Jane had to control her, finally getting her under control with the electronic collar (!) but Ruby still wanted my little guy...I ended up having to pick him up away from her and calming him down.
He's no wimp- he's been in obedience and advanced training since 4 months of age...he's the youngest and smallest in his class, and I don't want him to turn aggressive out of fear...
On the other hand- this woman is letting her Pit go unleashed on the dog walking path...and I'm not going to take a chance that one day, she'll get ahold of my little guy...he's 6 pounds at 10 months old and it wouldnt take much-with his trusting nature ...what to do? He LOVES that walk...people do let their dogs go unleashed, but this is the first time we've ever run into an issue...most the dogs are well trained...figures it has to be a neighbor right?
What would YOU do?