my 16 week bichon pup

Question
i got my puppy 8 weeks ago and i am wondering a few things about her. she does bite but i have been readin others questions and answers n it is puppy bite, but twice she has snapped wen shes angry, like for example she was out a walk yesterday and she kept biting her leash, so i picked her up when she wouldnt stop and said "no" she barked, made noises and snapped at me, i tapped her nose and said "no" but she kept doing it, it scared me a little and i put her down and dropped the lead. anyway i got her back, and today she was out the back and she was eatin wood or something i tried to take it out her mouth, after spending ages trying to make her think i wasnt going to so she wouldnt run and she done it again, this time i took her in and put her straight into the bathroom, with the baby gate up. what should i be doing when she does it? she is crate trained, which is another thing i am sure she has seperation anxiety, she follows me excessivly room to room unless she is really tired, and wen we leave her alone we come home, she is soaked with tears, emptied out her water, so soaked herself and sometimes done the toilet even althought she done it before we left and the most we have left her is 2 hours, and she is frequently sick, i try hard not to go out so she isnt alone, but i cant do this forever, i start uni the end of septtember and she will be in for a few hours herself, with someone stopping in on her and walking her throughout the day. she is fearless and just doesnt learn, she is forever biting, jumping on and off the couch, stealing food while we r eating, i dont know where she has  learned this and i never let her away with it but she keeps on doing it, glad to get this off my chest, lol
is you feel like reading and replying to my book, please do so lol

xxxxx

Answer
ha ha Hi there, you re experiencing a teenager at its best, what you have to do is learn to set that energy to task.When she barks an bites DONOT tp her nose, she will simply react with a nip... YELP in a high voice , she will STOP. DONT talk to her jut put her back down to do her thing.

mouthing is normal plese read my previous nswers on how to resolve this, it is real easy.

if you need more help then log into my health site
www.eurobichons.com

lots help there and its all free