Confused about a Virgo

I really like this Virgo girl.
I have just recently asked her out for a coffee but she declined.
In the msg she said that I remind her to much of her ex girlfriend witch she is finding it hard to get over.

Before all of this though I knew this girl from primary school and I had to look after her a few times in the buddy program, we had also went to high school together. But didn't really talk much because she was younger than me and we had different friends at the time.
We ended up being neighbours later in life, witch I didn't know until I saw her at a place she worked and started conversation than she told me that she sees me a lot when I went for my walks & that I was her neighbour, witch I didn't know.
She started acting weird in that everywhere I went she would be there and try to talk to me.
She would be flirtatious but also when I tried to talk she kept blushing and laughing at me even though I wasn't cracking a joke or being funny.
Anyways my question is what does she mean about the ex thing is it good or bad?
These weird signs I feel like I'm getting from her is it possible that she might like me a little?
And will she change her mind about her feelings towards me later down the track?
May I also add the reasons why I think she likes me is
because.

- When she found out I broke up with my gf she was asking me a lot of personal questions about her & why we broke up. And I like to keep my self and not talk about my personal life.

- She keeps trying to look me in the eyes even when we are not talking to each other mind you I am a very shy person that doesn't keep eye contact.

- When she does see me with my backpack on going to the supermarket, she always drives past and waves than I see her at the supermarket, she always comments oh I bet you here first etc.

It's just so confusing!!!
Help pls :/

I know from what she told me her and her ex gf broke up 2years ago and the ex is now with someone else who she has been with for like a year and a half.
Her ex also lives overseas by the way!!!

What gets me though I wasn't interested in her at first because I only saw her as a friend.
But I ended up seeing her on a dating website (Tinder) witch tells you about there profile, how far away that person is to you the last time they where on it etc.

Due to study I had to move away from the town I was living in witch is like over 2 hours away.
I thought great this would be an awesome way to get over her and I wouldn't see her profile on the dating website unless I was in that same town as her.
Lately I have been seeing her on the dating website like
4 Kilometers where I live.
I did tell her where I was moving as well...
I just think it's strange that's all.

Oh and my ex also didn't like her because she had caught her checking me out a few times before we bacame friends.... I told my partner at the time don't be stupid wen know each other from school & that she might have just remembered me that's all.

But I do understand her situation though I believe the heart needs to heal especially after break ups.
I have to just broken up with my ex wife over 6 & 1/2 years.

I believe it's important to build a relationship on compatibility. So me asking her out for a coffee was my way of getting to know her as a person and build more of a friendship before I make any dissions for I take at least a year to decide if I want to date someone.
But when she told me about her ex it just blew me away than that's when I thought maybe she liked me more as well.
I don't know?
Kind of wish I did get to know her more for she is a really nice person.