My girlfriend doesn't express her feelings which makes it hard to know how she feels?

It feels like I'm making the decisions by myself. I suggested we talk on the phone as it's been over a month, and all we are doing is texting on the phone. I don't know how she sounds or how to even approach this... I don't know how she even feels about me if we want to talk it a step further... We have certain conversations, and she agrees to it , but I don't know how she feels about it as it feels like I'm making the decisions solo.
My girlfriend doesn't express her feelings which makes it hard to know how she feels?
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