<human>: Can you give me a shortened version of the text?

My colleague and I started working together about 8 months ago. We both work around 60+ hours a week, so we share a lot of time together.

A few months ago she proposed to drive me home after work, as it was only a little detour from where she lives. Now she drives me home almost every day.

Then recently she told me there was an apartment for rent next to hers. She gave me their contact details and said I should call them. The days after she repeatedly asked if I called already. Until I did and was able to set up a meet (which still has to happen).

She also cooks for me when we have some free time on the job. And if she doesn't have time to prepare something she always reminds me to eat as I tend to forget.

The reason I post this is; 
I don't know how to handle these kind of actions. And my biggest question is "Why does she do these things?".
She's already in a relationship for a few years. So are these actions just out of sympathy or is there more? 

Spending so much time together "forces" you to talk about more than just the weather. But I still like to see her as a colleague, not a friend.
Same goes for everyone else I work with.
<bot>: Don't know how to react to my colleague's friendly behaviours (prepare food, drive me home, set up a meet to rent an apartment next to hers).