My staffy isn't a lap dog at all...

She's only 15 weeks, have had her for 6 weeks. She's a rescue mixed staffy.

She's not a lap dog at all for now, she's more shy than anything else, maybe she's still traumatised by her first few weeks, she was found in a box about to die, she was bitten and needed surgery.

I don't have any specific expectations but my children would love for her to enjoy cuddles more before running back to her crate.

Is this normal for puppies or could she just not be that social and loving?

Thanks