Never had a girlfriend before so not sure if this girl is on me or not?

I met a girl at work back last October and over the year the two of us have become quite good friends. She resigned from the job back in July and we've still been in good contact ever since.

She has a bubble personality and gets along with everyone and anyone. Sometimes people do think she likes them because of so.

Recently things between us have picked up. Before her resignation she use to go around telling people that we were dating and im the reason that she had to leave....of course in a joking way. Snapchat and pictures are also things she loves taking especially of the two of us and shes added love hearts etc etc to them too.

I thought maybe I'd ask her to hangout just the two of us, we were good on it but my first plan she changed her mind last minute and would make up excuses to not go out together as the two of us in terms of hanging out so I've just stopped asking.

We also have a group opened on whatsapp with me her and some other mates....I had to leave the group due to some phone issues and she privately asked me why i left and when i didnt reply for twenty minutes wrote "fine ignore me".

When I re-enetered and did explain to her why, she wasn't in the group either and i was told she left randomly after me. Were both back in now and resumed normal conversations.

I'm not sure whether she likes me or not with these signs.....what should I do? Do I ask?