Should I write her off just yet?...Whats her deal?

This girl (27 yrs old) I've known since March and I have had day by day relationship that started off as co-workers to friends to a potential serious relationship. We've hung out a few times and gone to concerts (and we still have one more coming in november). Her mother works with me and she works in another department btw. A month ago I told her how I really felt about her with no regret and she indicated that shes always liked me too and how she thought about me alot (which explains why she constantly texted me in the middle of the night and when I get off from work). We would go back and forth with heart warming text messages to each other and wake up calls to see how each other is doing. plus the occasional phone calls. Though she would come off as kind of cooky at times, I felt like she is the one.

But as of a whole week ago (last time I heard from her, last sunday) I had not heard from her. I last got a reply last sunday afternoon and everything seemed normal. I sent her another text later that day to say "How r u?" and later "Hi Babe!" and no reply...So I wondered what was up and called her and no answer. I felt that she might have been busy so I left her alone. The whole week seemed pretty quiet without her around..I asked her mother if all is fine with her, she said shes been kinda stressed over having her mother, grandmother, and nephew all move in with her, which to me seems quite reasonable since shes the type who likes to spend a lot of time alone.

but still, wouldnt she at least have a few seconds to spare for her "friend" who cares for her? A quick reply like "Im ok" would've done, but I fear she might of lost interest or something else...there could be so many possibilities..Also i would try going to her house, but not with all her new company around, and her not responding to my calls or texts, and not seeing her at work is driving me nuts...I miss my friend and "potential gf"...I will see her again I know, but in what circumstance? I dont know whats going on!!!!!

Friends I need answers, should I wait for her, if not how can i find closure if I cant let her go? Sorry for the long story..theres so much more to this...please only mature answers only...