Evening Danny, touched you would ask me mate, me personally I would just say along the lines of: I know what has happened has affected you but I am truly sorry, I love and care for you more than anything but am giving you space, I just wanted you to know I am thinking of you and want to resolve things when you are ready to do so.

Not sure if that’s right but that’s what I would send, you said yourself it’s better to explore deeper face to face but the txt is just to shoe your thinking of her and respecting her space the same time.