Need help...Maybe an outside view can help.

I've (32 m) been dating this person (f 31)...for two months already. The first month was amazing we went out at least twice a week... She always eager to be around and to see. Then her trip happen, she and her friends went on a trip and when she came back she wasn't the same.. She seemed more distant...we've only seen each other twice this month. She tells me that she doesn't want to go out because we are going to out in a week and that should suffice... The kicker is we are going to go out with a male friend of hers that she had a crush on. And she also told that im to attached because i want to see her and shes not at my level of attachment yet... Should i be worried?? Should i end it??? Or should i keep seeing her... Any advice will be helpful thanks.. And also she tells me that making her happy is a commitment and should commitment to do that until she is ready.. Thanks