Does this coworker like me?

• email marketing company
• register limited company
• company reports
• free email marketing
• gift card printer

Here is the situation, I am in IT that is contracted through another company, so technically I do not work directly with the same company. I have noticed that this employee and I seems to almost always just happen to "notice" each other in the cafeteria, and there is always eye contact. She always smiles and even from across several tables, she makes it a point to make a facial expression like she is happy to see me. She seems to always sit either in direct view of me of within ear range, even though there maybe multiple tables to sit at. I don't see this person everyday so I could go several days to a week or more without happen to bump in to her(I am constantly walking from department to department) so it is impossible to predict where I would be at any given time. Also my lunch time can be delayed due to working on a problem, Just this past week I had to go to her office because she did put in a ticket for the IT to look at a printer. I purposely took the ticket because I like her as well and wanted the attention from her. I always perform my job with professionalism because I do have to deal with GM's, VP's and managers. So I treated her like any other person, but kept observations of her. Keep in mind she directly deals with VP and high level management, so she usually keeps everything very professional. So it is very hard to get a vibe from her sometimes.She needs a part for a printer. I looked up the part for her and her department is responsible for making the purchase. After emailing her this information she replied with the following, "You are the BEST!", I replied by saying thank you and a smiley emoticon(all of her emails up to this point has NEVER had any emoticon) and she replied with "Your very welcome!" and added her own smiley. So she reciprocated my smiley. And over the past month or so on another project she complimented my on doing a good job, even though the job was basic for me. This type of contact with this person has been ongoing for the last two months, she always either smiles and says hi to me or waves at me if she can't verbally say hi.I have had suspicions that she likes me and it was somewhat confirmed with she reciprocated the smiley when she has never used one before. I know what some people might say with dating coworkers but we work in two different departments and I could be transferred to any one of they company's other properties either wanted or unwanted. Also note that there is a manager where is wife is working there so I don't think there would be a problem. Also another thing to think about, she replied to the email regarding the part for the printer yesterday, but did not reply to my last one that I sent that contains the smiley and the personal note. Instead she replied using the next one before that. I was thinking why?, I normally reply by using the last email sent which is on the top of the list in the inbox. I could only come up with because she did not want some one to see a flirtatious email(she has an open office not one surrounded by walls. She did not delete the entire conversation and start a new email. I am speculating here by that is possible she likes me and it is mutual but does not want the word to get out so she did not reply to the smiley email to eliminate anyone passing by see it and rumors start. She is not wearing a ring and based on my IT skills I can confirm she is not married and is 37 and I am 35. Are these signs that she likes me and is into me? I come into contact with lots and coworkers and NO ONE has the connection like we seem to have.

Does this coworker like me?