Is she interested in me?

I got to be really close friends with this girl over the summer, seeing each other at the bar she worked at primarily. She was always really excited to see me, her eyes lighting up and her usual bright smile getting even brighter. We decided to get lunch one day and it went pretty well. Nice and relaxed with good conversation. Over the course of the summer, we clicked really well but there were no romantic intentions on my part. I'm 40 and she's 25. That being said, a week or so after the lunch, I realized I was falling for her.

One weekend, her mother visited from out of town and after seeing her at the bar Thursday night, I visited the bar again Sunday (she had given me her entire itinerary for the weekend with her mother) and she was clearly uncomfortable to see me. She refused to give me a hug and didn't even introduce me to her mother. Her mother had sat down next to me and after a little while, she moved her to the end of the bar after which she actually talked to me a little bit and said we were ok, but not about what was wrong. I gave her some space for a few weeks, not visiting the bar but trying, unsuccessfully, to get lunch together.

After a few weeks, she told me she missed me and that she was going through a rough patch. I went back to the bar and things seemed back to normal...big smile and big hugs and everything. I went back the following week and it seemed normal until her boss, having seen how uncomfortable she was with me there a month before, threw me out while she was at the other end of the bar. She apologized repeatedly afterwards and wanted to get lunch to talk.

3 times in the next month, we made plans that didn't happen. On Veteran's Day, plans were derailed because she had to get some paperwork done for a job she was applying for before work. She suggested a dinner on Thanksgiving Eve...I tried to confirm the plans but she never responded to my texts, saying things were just so hectic. I took a week off work to get some stuff done and make sure we had some time to get together. She excitedly agreed to lunch for Tuesday of that week but when I got going, she cancelled, saying she was sick and staying in bed til work that night. I tried rescheduling with her but didn't hear a thing from her til the next week when she said she was seeing someone and thought lunch would be a bad idea. She did say that she was working at a new bar and that I could come visit and talk there.

After a few weeks, I finally made it in, on New Year's Eve. She was kind of distant at first but she did explain why she acted uncomfortable the one day. The reasoning didn't make sense...she said her boss was worried I was harassing her (if that were the case, why would she have acted like I was harassing her instead of acting normal?)...but at the time I didn't question it. I was just happy to get some explanation and to see her again. Over the course of the night, in which no supposed bf was there at midnight (I got a big hug and a kiss on the cheek), she grew more at ease with me again and seemed pretty happy to have me there. When I left, she gave me a big hug, and happily told me we'd see each other again soon.

Since then though, she's taken to hide her Facebook status from me and has basically ignored my texts and messages.

I'm wondering if, before her mother visited, she was feeling something more for me but her mother derailed things because of the age difference or something.

After the incident when I got thrown out of the bar, she always seemed really interested in getting together but it felt like she got cold feet at the last minute.

I'm kind of thinking that the reason for the current distance is that she still has feelings for me that she thought she might be over before she saw me again...and that she's afraid to see me again because of that.