Do you have a photo of your Blonde female? Where did you get her from? I have been breeding Yellows for years and to find a nice quality,
HEALTHY Yellow is next to impossible especially if your using back yard bred or Pet store bought hamsters. All have stated exactly how to get Tortoiseshell and Tortoiseshell and White hamsters.
Yellow gene is not a gene for a beginner Hobby breeder. It takes much more work to be a successful breeder of yellow gene hamsters. Yellows have attitude, and are much harder to socialize. To get hand tame Yellows involves hours of hard work when a litter is old enough to handle. If Yellow gene pups are let go without handling even one day they tend to go back to start with taming. If a buyer doesn't continue handling them they will become very vocal and much more apt to bite. Yellow gene Females are much harder to breed cause they are more solitary then other colors and unless you mate them precisely on the mating day and time they are most likely to attack your male.
Through almost 17 years of breeding Yellow gene hamsters as well as other colors the Yellow females were much more apt to cull whole litters then any other colors. If your serious about breeding Yellow gene hamsters you should want to always learn more about the genes involved in breeding them successfully. No serious breeder ever thinks they have had enough learning as there is always more which can be learned. Genetics is not as easy as X + Y = a winning Hamster. It's easy to produce the color you seek IF you know what the gene looks like in it's base coloring, and what that color looks like when combined with other coloring. Like what does a Yellow hamster look like if it also has two recessive genes for Black? Does the Yellow and Black Hamster look the same in a male as it does a female? What happens when Yellow is combined with Cinnamon? Why is it frowned upon to cross Yellow with Cream? If you know this answer then you would not wish to even think about using your Blonde Female in any Yellow breeding program.
If you know beyond a doubt that your female is Blonde then why oh why would you not want to breed show quality blondes a color that is just as lovely as any Tort(IMHO) and is far far more uncommon then the Torts. Also to be a real respected breeder you need to call the hamsters by their proper names as the color Calico does not even exist in the National Hamster Council and is just as much a gimmick names as Panda, Black, and Dalmatian Bear Hamsters. The proper and correct name for a Three distinct colored Hamster is Tortoiseshell and White. Surely you don't want to be known as a producer of gimmicked color named Hamsters right?
To successfully breed Yellow colored hamsters you would need to start with two breeder raised Hamsters and Never ever breed your blonde into that line. One of these breeder raised Hamsters would need to be Yellow or a Yellow combination color and it's mate would need to be what ever color Tort you plan to breed. Since you mentioned Black before, One would have to be Yellow carrying black(why it is of utt most importance to have a yellow with a pedigree of at least three generations of parentage) or a yellow and black combination color. The mate would need to be Black with absolutely no cream genes in it( again why it is of utt most importance to have a pedigree of at least three generations of parentage). One of the two would need to be one of two patterns, either Banded, or Dominant Spot(Banded is much more stunning for a Tort and white).
It is very dangerous to breed two patterned Hamsters together as the White Belly gene can be there but will be invisible until you get an all white hamster who has no eyes and is deaf and unhealthy. We Hobby breeders as well as show breeders are more then happy to help you understand the Yellow genes but the first thing needed is for you to be able to accept positive criticism. Be willing to learn and change, to better the quality of our hamsters(it cost just as much to raise a litter of inferior quality Torts as it is to raise a high quality very to the NHC standard Tort Hamster). Be willing to admit we don't know it all, and that others who have been breeding the color seeked may know more then you at this time. There is nothing shameful in not knowing, what is shameful is not knowing, and not wanting to learn(or to accept answers) which would help you to improve in knowledge about Torts, and Tort and White genes.
I'm sure in no time at all you can be breeding happy healthy Torts and Tortoiseshell and white hamsters that you would be very pleased to offer to others.