What is she trying to say?

I have known this woman for about two years. She is about five years older than me, which I have no problem with. We both work at the same place. I work out in the shop, she works in the office in human resources. I stop by to see her about once a week or so to ask how she is doing. A little bit of flirting, back and forth between us. I also know most of her family. She basically got me the job there. For christmas I got her a t-shirt because she got me my job. Nothing fancy just a small gift. I gave he the shirt at work. I put it on her desk, because she wasn't there at that time. And today (almost two weeks later) she sent me a text. The place I work at is shut down this week, so I haven't seen her in over two weeks. I didn't know she had my number. I had no idea who was texting me at first, till she thanked me for the shirt. We were texting for about two to three hours. I am almost sure she has a boyfriend. She text that she loved the shirt. I asked how she was doing and she said she was bored. What is she mean? Is she interested in me? Or just being nice to me. If she is being nice, why would she just wait till I see her at work to thank me. I am very confused. Ladies would you text someone out of the blue like that?