Got a text from this number, and when i responded it sent another text saying "my phone is dying, add me to your yahoo messenger textwoman048"  no other responses.

I also got a text from this number that said, "Hey Heather." I responded, "Hi! Who is this?" There was no response... I then texted back the next day (today) saying, "Who's number is this?" Response, "Add me on Y! Messenger. TextGirly14"