Page 28:
I'm afraid of being loved.
Because "I love you this way" means the same thing as "I won't love you anymore if you stop being this way," doesn't it?
Touko is afraid because of that, but does she think it applies to herself, too? That's what Yuu has been afraid of, and at the moment thinks to be the case.
Page 30:
Yuu... has changed...
By still loving Yuu, could Touko disprove the basis of her fear? I thought this at first, but it may not be so simple.
Certain changes no one is supposed to be fine with (e.g. their partner becoming violent), so in a certain sense that concern can never be completely dismissed.
These sentences also don't cover the expectations beyond staying the same, that Touko sounded to be afraid of before, and why she pushed herself. She may be more relaxed because she got over that part when she realized that people accept her as she is now. If so, then what is left is the fear of changing in a way that makes others stop accepting or loving her, or she stopping to love Yuu because of such a change?
Page 29:
I can't believe I'm afraid of Yuu...
Is it just Yuu? Touko has to trust both Yuu and herself that they'll be good to each other. It complicates this a bit that Touko just realized she might have hurt Yuu for some time (page 25), but it's necessary to face that, too, and to try avoiding it in the future by getting to know how the other feels.
I may still have left something out, but this chapter, that at first read might look fairly simple, has so much behind it thanks to all the earlier ones. I love this manga a lot.