By all means get mama a silkie. If mama ain't happy, nobody is happy - trust me. Slkies don't fly (but can jump high) and they are not regarded as good layers. They also get picked on because their large crests and beards obscure their vision. When people have trimmed the feathers back -it makes quite a difference.
The breed as a whole is known to be among the very best broody hens. Meaning they often go broody- they want to sit on eggs and hatch them. You could swap out the silkie's eggs and add fertile eggs of any breed and she will hatch and raise them as her own.
Many people keep silkie hens, so they don't need an incubator. It's not all that easy, you can't make a hen go broody. When their hormones tell them to that's when things come into play.
Another thing about silkies - they are extremely difficult to sex before 4-5 mos. of age and sometimes not till they lay or crow. Hatchery silkies don't look much like breeder birds and may be lacking the "broody" influence. Silkies do very well as house chickens and that could sidestep the issue of other breeds attacking them. You might like to check out "people with house chickens," thread.
My friend has had silkies and seramas as house chickens for years. They fight over a place on the chair when the TV is on, and take over the dog's bed when they feel like going broody. They sleep on a mat inside the door when my friend is out, and greet her return like dogs.