Wow that was an about face for him judging by the way he was so intentive towards her for so long. Something happened to change his mind the question is what happened? Either he went home and realize that he didn't want a serious relationship or partying and being with friends made him realize that is what he wants to do right now. If I were your daughter I would not give him a second thought and when or if he calls do not answer the phone show him it's not okay to just treat someone like discarded garbage after he was chasing her so hard. Either he met someone while he was home or had a revelation that he is too young to settle down with one woman. In this case your daughter's premonition was right. She had a feeling this might happen and it did, just take it as a lesson learned and don't look back. It may hurt now but at least it happened two weeks into the relationship and not years down the line when she invested all of her feelings and emotions into the relationship. What your daughter should do is write this guy a note telling him how she feels about the way he went about not seeing her anymore so that she can find closure without having to actually talk to him and then forget all about him and chalk it up to his immaturity and if that near death experience didn't make him a better person than nothing will and be glad she doesn't have to deal with him anymore. Don't let this man damage her self esteem or self worth.
No I don't think he is in a relationship and I think he was honest with her when he said he isn't ready for one either, I think going back home made him see that he is young yet and shouldn't be tied down but he cannot help his attraction for your daughter and may want to be her friend to start and then see where things head. What your daughter needs to figure out is if she truly wants to see how things go with this guy, it's obvious that he isn't quite sure what he wants in life and what path he wants to take and who he wants to take it with, Your daughter needs to get strong and just come out and ask him what he wants from her with the way things went on Tuesday it makes everything up in the air again. If he continues to say he doesn't want a relationship and only wants friendship then your daughter need to have less contact with him and not talk to him everyday. Show him that either way she will be fine with him in her life or without as long as he knows she may be there waiting for him to make up his mind he will continue to treat her that way. If he knows that she can very well move on without him he will see that the ball is no longer in his court but in your daughter's court and he may try harder or give your daughter a chance. Like I said before your daughter has to learn her worth and realize she deserves so much more than what he is now giving her.
If she is afraid of being hurt then I wouldn't invest much of her feelings into this guy because he seems wishy washy about his feelings and what he wants especially from your daughter. I would limit the amount of communication she has with him and texts she replies to this way he will know that he cannot have his cake and eat it too. She has to be very careful because she seems to have developed feelings for him and now she doesn't know how to protect her heart but it's crucial that she doesn't let him see that she has developed feelings for him but I truly think he has feelings for your daughter but there is something holding him back and your daughter is going to have to figure out what that something is, it may be the life change event that happened in his life that has made him this way and makes him want to live life to the fullest without anything or anyone holding him back.