Hi there (to you both
I wouldn't worry too much about her sudden lack of interest in solids. I think you will find that this will go in phases for a while (for a long while, sometimes), where sometimes she might be very interested and other times not. I do think the crawling is related. I mean, she can do such cool stuff now! Who wants to sit in a boring high chair and eat...again?!
The important thing to remeber is that at her age, solids are for trying out and milk is for nutrition. Developmentally her body isn't depending on solids until she's about 1 year old, so for now you can completely relax about them, and just go at her pace. Just do be sure she is getting all the milk she needs.
What I would do is continue the eating ritual at a time when it's not dragging her away from practicing her new tricks. Offer her one or two things. If she refuses, fine. Otherwise leave something on her tray until you think she wants to be picked up. Also, you said you've given her rusks, can you leave one on her tray so she can try picking it up with her fists? Even if she doesn't eat it at that moment, it's good to get a feel for food and associate it with the high chair.
Leanne, if she will only do fruits and yogurt maybe stick with that for now and offer veg in a week or two?