I love Latte...
In am 62 and just had to get another lab (Moses) who is now 19 months old ..but pretty good on recall not 100% but better then any of the other dogs.
Yes a high value treat...is important..
Moses does not get junk for like my others got,
Each week I make homemade chicken or beef jerky I just bake it and cut it thin bake @ 275 to 300 for 3 hours ( or purchase a dehydrator)
The only time he gets this is for recall, ,this homemade jerky cost about 2 dollars per week (yes that is IT)
Things I learned from others
-Key.. only call Latte when you know she will come ( do you have a fence in area..) seems hard but you know when see will come
-Only call her once (again try to be in a fenced in area)
- When she comes give her that special treat,,a treat she will ONLY get when you practice recall
-Praise the hell out of her
-When you call her face her but take a couple of steps backwards-
-Use hand signals too if you can when you call her
It might take months but don't get up
Good luck