Hi luckilab03!

First, you need to nix the aggressive tactics, as you've found out they're making the problem worse.

Second, you need to pick one tactic and stick with it. There's no instaneous fixes. It takes calm, consistency over time for puppies to learn things. Bouncing from one thing to another isn't teaching her anything, except for maybe that her leader's indecisive and that there's no order to the pack, so maybe she needs to step up and put things right. I've got a 15 week old Collie puppy, Gully, right now and if he bites me, I just say "No bite" and then give him something appropriate to chew on. Eventually I started to see some improvement. It did not happen over night. You also mentioned she won't let you touch her feet without biting. Gully didn't like me messing with his face. Here's a lil' trick that worked really well with him. Put some peanut butter on your finger or if she wants to chomp on your finger, then put it in the palm of your hand. You're wanting to promote licking here, not biting. As she's licking the peanut butter, say something like, "Give me kisses" and with your other hand, touch and massage her feet and any other places she's not comfortable with you touching. Keep doing that everyday. You should be able to incorporate this if she starts to bite you too. Just say "No bite", then "Give me kisses". You may wanna make sure you've got treats in your pocket at all times, so that when you get the kisses vs the bite, you can reward it immediately.

Third, you mentioned playing with her 24/7. I know you don't mean that literally, but it does sound like you're maybe playing too much with her. That's way too much attention and stimlui for a puppy. She needs to learn to be calm too. Put her on a leash. Tell her "Settle", then just step on the leash near her, to where the only comfortable position is for her to lay down. No yanking on the leash or yelling at her if she goes nutz jumping around. Just ignore her. When she finally lays down, say very calmly, "Good Settle", then go back to ignoring her. Since she's so young, start with just having her settle for maybe a minute or two and slowly build up the minutes. Give her a release word, like "Okay", then have her reward be a play session.

What type of games are you playing with her? I wouldn't do any rough housing, wrestling, chase or tug games with her. I'd only be playing fetch and catch type things with her right now. She's a Lab, so it hopefully it shouldn't be too hard to teach her to fetch. Gully learned this pretty quickly and being a Collie, it's not real high on the list of his instinctual traits. Go into a small enclosed room, so she can't run off with the toys. Have 2 that she's interested in. Throw one and tell her to "Go get it", once she picks it up, make a big deal about the second toy in your hand. If you do it excitedly enough, she should come back for the second toy. Hopefully she's still holding the 1st toy. If she is, say "Bring it here". Stay excited about the 2nd toy in your hand, so she'll want that one enough to drop the 1st toy. As she's dropping it, say "Drop it", then quickly toss the 2nd toy and start the whole process over again. Make sure you stop the game before she gets bored with it. Oh and make sure you're not leaving the toys laying around for her to play with whenever she wants. Chew stuff is fine for her by herself, like Kongs, but toys need to be only when she's interacting with you, so you and the toy stay exciting for her.

Finally, it looks like you're having some major leadership issues. I'd definitely go with binka_nuggets suggestion of NILIF. Also, make sure you're going through doors first, eating first, ignoring her for about 5 mins when you first come home, stay consistent with rewards and punishments, and keep her off the bed and furniture.

Good luck!
Par...