<human>: My girlfriend calls me every break she has at work, and every bus stop she gets to. I love her very much and I don't want her to stop - I like to know that she's safe. But more than half of the time, when she calls me, she has absolutely nothing to talk about, whereas I'm trying to cook, watch something, play a game, read, or any number of things I do, and after a minute or two of being on the phone, the conversation basically ends, except nobody hangs up. She doesn't hang up because she has nothing better to do than talk to me, even though she has nothing at all to say. I don't hang up because I feel like if I tell her "okay well I'm glad you're safe, but I'm going to hang up and do this now" she will be upset with me because she thinks I'd rather do that thing than talk to her, which would be stupid because we're not fucking talking anyways, we're just listening to each other breathe. This goes on for WAY TOO FUCKING LONG before either she gives in and lets me go, or I tell her I'm trying to do something that requires my full attention and I need to let her go. I feel guilty for getting off the phone with her to go do something else, because she's in a position where she basically has nothing to do but talk to me. But when neither of us are talking and I'm straining my neck to hold the phone under my ear, listening to her breathe as I play Morrowind in eager anticipation for Skyrim, sometimes I just want to tell her "OKAY BABY WELL IF YOU DON'T HAVE ANYTHING TO SAY I'M GOING TO HANG UP" (yes, capitalized) But I don't want her to feel like I'd rather play Morrowind than talk to her. But I don't have anything more to say, and neither does she.

Could you distill the essence of the text into 1-3 sentences?
<bot>: way too much silent time in phone conversations, how do I get her to start thinking of things to converse about before she calls me, or end the phone call without her feeling hurt?