It's actually a very good sign - your dog is stealing your underwear because it (obviously) smells of you. What I do with my dog is, when I take my t-shirt off at the end of the day I put it in her bed for her to sleep with. Then in the morning, when she's awake and out of her bed, I take it out to be washed. Sometimes, I'll see her pulling one of my old t-shirts out of the washing basket to take upstairs to her bed! I've trained her to know that there are certain items of clothing she can't take (such as underwear), so she knows her limits.

In the begining i though you where talking about your daughter

U have got a keeper there... Who needs a boy friend, lol

Buy her a nice blanket, sleep in the blanket and get your scent on it and then make a bed with the blanket for her., where she likes sleeping. This will attach her feeling of safety and smell of you to the blanket and she will stop taking your underwear.

That's adorable! You ought to give her an old t-shirt or something with your scent on it to sleep with. Or maybe just buy a cheap pack of underwear so you don't have to worry about her ruining good ones.

my dog did that lmao! just spank her butt or tap her no and tell her no! or you can bury her nose in it and repeat No!! a few times

My dogs did that when they were little, but they grew out of it. Your scent comforts her, so try wearing an old t-shirt all day and give her that to sleep with.

Change her dog food, she probably just likes the smell of tuna

Unless you're catching her in the act, it's completely pointless to punish her for stealing you're underwear. They won't associate the punishment with the act, and will just be confused. 10 weeks is a bit young for a puppy to be separated from it's mother, so the smell of your panties probably comforts her (my cats were both feral/abandoned by their mothers, and they both lay on top of my undergarments and do that knead/suck thing, especially with my bras). Instead of punishing her, just take your panties back, say "no", and redirect her to something else--preferably something with your scent on it. It will take patience and consistency, but you will be able to break her of it without getting even more behavioral problems in the process that way.

My puppy used to do that till he was like a year and half. You only have 10 more months or something like that more to go.